The molecular weight of the solid acid in units of g/mole is 25 g/mol
given that :
mass of the solid acid =0.630 g
volume = 40.4 mL = 0.04 L
moles = molarity × volumes in liter
moles = 0.630 × 0.04 L
= 0.0252 mol
the molar mass formula is given as:
molar mass = mass / moles
molar mass = 0.630 g / 0.0252 mol
molar mass = 25 g/mol
Thus, carrying out an experiment to determine the mw of a solid acid with the generic formula H₃A. you weigh out 0.630 g of the solid acid in a weigh boat and transfer it to a 125 ml Erlenmeyer flask. after dissolving the acid in 25 ml of distilled water, you add 15.44 ml of 0.335 m Sr(OH)₂(aq) solution . the molecular weight of the solid acid in units of g/mole is 25 g/mol.
To learn more about moles here
https://brainly.com/question/26416088
#SPJ4
Determine the oxidation number (oxidation state) of EACH element in the following six compounds.
a. CuCO3 e. SO2
b. CH4 f. (NH4)2 CrO4
c. IF
d. CH2Cl2
The oxidation number of Cu, C and O in CuCO₃ is, (+2), (+4) and (-2), The oxidation number of C and H in CH₄ is (-4) and (+1). The oxidation number of I and F in IF is, (+1) and (-1). The oxidation number of C, H and Cl in CH₂Cl₂ is, (0), (+1) and (-1).The oxidation number of S, and O in SO₂ is, (+4) and (-2). and for (NH₄)₂CrO₄, N has an oxidation number of -3, O has an oxidation number of -2, and Cr has an oxidation number of +6 in the compound (NH₄)₂CrO₄. The H in(NH₄)₂CrO₄ has an oxidation number of 1.
How does oxidation number work?The number of electrons that a specific atom or ion has either gained or lost in comparison to a neutral atom is known as the oxidation number. The oxidation number of a free element is always zero. Since the compound loses electrons when it is oxidized, the meaning was enlarged to include further reactions in which electrons are lost, regardless of the presence of oxygen.
A free element's oxidation number is always zero.
A monatomic ion's charge and oxidation number are the same.
Hydrogen (H) has an oxidation number of 1, but when mixed with fewer electronegative elements, it becomes negative.
In most compounds, oxygen (O) has an oxidation number of 2, but peroxides have a -1.
A Group 1 element's oxidation number in a compound is one.
In a compound, a Group 2 element's oxidation number is +2.
A Group 17 element in a binary compound has an oxidation number of 1.
In a neutral molecule, all of the atoms' oxidation numbers add up to zero.
the total of a polyatomic particle's oxidation numbers
a) CuCO₃
Let Cu be in the oxidation state "x."
As, the oxidation number of carbon is (+4) and oxidation number of oxygen is (-2).
so CuCO₃=0
Cu+C+3O=0
x+ 4+3(-2) =0
x+(-2) =0
x =+2
Cu has an oxidation state of (+2)
b) CH₄
As, the oxidation number of hydrogen is (+1)
so, CH₄ =0
C+4H =0
C +4 = 0
C= -4
C is in the oxidation state (-4)
c) IF
I should be in the "x" oxidation state.
In a binary compound, a Group 17 element's oxidation number is -1. Iodine and fluorine both fall under the 17th category.
IF = 0
I+F+0
I+(-1) =0
I= +1
I is in the (+1) state of oxidation.
d) CH₂Cl₂
As, the hydrogen oxidation number and oxidation number of a Group 17 element (Cl) in a binary compound is -1.
CH₂Cl₂ =0
C+2H+2Cl =0
C +2+(-2) =0
C = 0
e) SO₂
As, the oxidation number of oxygen is (-2).
SO₂ =0
S+2O = 0
S +(-4) =0
S = +4
s is in the (+4) state of oxidation.
f). (NH₄)₂CrO₄
(NH₄)₂CrO₄ is from (NH₄)⁺ + CrO₄²⁻
so
NH₄ =+1, since hydrogen is +1
N+ 4H = +1
N +4 =+1
N = -3
and
CrO₄ = -2
Cr +4 O = +2, since O = -2
Cr +4 (-2) = -2
Cr+ (-8) = -2
Cr = +6
learn more about oxidation number at
brainly.com/question/15167411
#SPJ4
What is the net charge on the amino acid glycine at pH 7? at pH 12?
Explanation:
The chemical formula for the amino acid glycine is;
[tex] \bold{HOOC—CH_2—NH_2} [/tex]
In solution, the acidic part of the molecule that is [tex] \bold{COOH} [/tex] donates a proton [tex] {H}^{+} [/tex] which is accepted by the basic side of the molecule which is [tex] \bold{NH_2} [/tex]. The molecule in solution becomes:[tex]\bold{ ^ - OOC—CH_2—{NH_3}^{+}}[/tex]
In this state both negative and positive charges cancel out and the net charge on the molecule becomes zero.At a pH of 7 ( neutral state), both negative and positive charges cancel out on each each and the net charge becomes zero[tex]\bold{ ^ - OOC—CH_2—{NH_3}^{+}}[/tex]
At a pH of 12( basic state), there are more [tex] \bold{{OH}^{-}} [/tex] ions present than [tex] {H}^{+} [/tex] ions, the [tex]\bold{{OH}^{-}} [/tex] ions draws a proton from [tex] {NH_3}^{+} [/tex] making it neutral leaving the other part of the molecule negatively charged that's [tex]\bold{{COO}^{-}} [/tex]. Thus the net charge on the molecule becomes negative ( -1).[tex] ^-OOC—CH_2—{NH_3}^{+} + {OH}^{-} \: \rightarrow ^ - OOC—CH_2—{NH_2} \: + H_2O \\[/tex]
66.7 ml of ethanol was dissolved in 222.2 ml of water. what is the volume % of the ethanol in the solution? Respond with the correct number of signficant figures in scientific notation. (Use E notation and only 1 digit before decimal, for example, 2.5E5 for 2.5 times 10 to the power of 5)
A total of 66.7 liters of ethanol were dissolved in 222.2 mL of water. The mixture contains 30.0% ethanol by volume.
Is ethanol safe to consume?Ethyl alcohol, usually known as ethanol, is regularly consumed by more than two billion people worldwide. This type of alcohol is produced by fermenting yeast, sugars, and starches. People have long consumed alcoholic beverages that contain ethanol to change their mood, such as beer and wine.
Does Islam forbid ethanol-based alcohol?If a product contains less than 1% of ethanol, it is considered to be a significant preservative and qualifies for Halal logo as Mubah, which is acceptable provided the ethanol was either found naturally through fermentation with oxygen present or was artificially added.
To know more about ethanol visit:
https://brainly.com/question/25002448
#SPJ4
in the following reactions, which species is oxidized? question 15 options: a) cu b) none, this is not a redox reaction. c) fe d) o e) s
In this reaction the oxidation number of hydrogen increases that is oxidation of hydrogen and the reduction of Copper occurs.
What is redox reaction ?Any chemical process in which a participating chemical species' oxidation number changes is an oxidation-reduction reaction, often known as a redox reaction.
It is also clear that this is a reduction reaction because the oxidation number for copper decreases from +2 in Cu2+ to 0 in copper. Since oxidation involves the loss of electrons, 2H2O is oxidized when it loses 4 electrons to create O2.
The given reaction is :
CuO + H₂ = Cu + H₂O
in this reaction the oxidation number of hydrogen increases that is oxidation of hydrogen and the reduction of Cu occurs.
To know more about oxidation you may visit the link:
https://brainly.com/question/9496279
#SPJ4
2.why is the reaction mixture extracted with sodium bicarbonate? give an equation and explain its relevance.
R - CO - OH + NaHCO3 → R - CO-O- Na+ + H20 + CO2
Here Sodium bicarbonate solution is used to neutralize the excess acetic acid and the acid catalyst in the reaction mixture.
In this reaction the product sodium acetate salt is formed which can be easily removed during work up because of its complete solubility in water. The exact reaction is as follows. Baking soda or bicarbonate of soda is the popular term for sodium bicarbonate, which has the chemical formula NaHCO3 and is also known by its IUPAC designation, sodium hydrogen carbonate[9]. A sodium cation (Na+) and a bicarbonate anion (HCO3) combine to form the salt. In spite of frequently appearing as a fine powder, sodium bicarbonate is a crystalline white solid. It tastes similar to washing soda, with a mildly salty, alkaline flavor (sodium carbonate). Nahcolite is a type of naturally occurring mineral. It is a part of the mineral natron and is present in many mineral springs as a dissolved substance. Due to its long history of use and variety of names, including baking soda, bread soda, cooking soda, and bicarbonate of soda, the salt is frequently seen next to baking powder in supermarkets.
Learn more about Sodium bicarbonate here:
https://brainly.com/question/8560563
#SPJ4
What is the net charge on the amino acid glycine at pH 7? at pH 12?
Net charge on the amino acid glycine at pH 7 is Zero (0) and at pH 12 is minus one (-1).
Chemistry uses a scale known as pH, which formerly stood for "potential of hydrogen" (or "power of hydrogen"), to express how acidic or basic an aqueous solution is, acidic solutions (solutions with higher H+ ion concentrations) have lower pH values than basic or alkaline solutions. The pH scale, which is logarithmic, exhibits an inverse relationship with the concentration of hydrogen ions in the solution. The pH neutrality relies on temperature, falling below 7 if the temperature rises above 25 °C. For very concentrated strong acids, the pH value can be less than 0; for very concentrated strong bases, it can be higher than 14. The set of standard solutions whose pH has been defined by international agreement can be used to trace the pH scale. Using a concentration cell with transference, the potential difference between a hydrogen electrode and a standard electrode, such as the silver chloride electrode, is measured to get the primary pH standard values. With the use of a glass electrode, a pH meter, or a color-changing indicator, the pH of aqueous solutions can be determined. Chemistry, agronomy, medicine, and water filtration all depend on pH measurements.
To know more about pH please refer: https://brainly.com/question/28565107
#SPJ4
what would be the final pressure in a 5.0 l reaction vessel if 6 mol hydrogen gas completely reacts with phosphorus at 298 k?
If 6 mol of hydrogen gas completely reacts with phosphorus at 298 k, the final pressure in a 5.0 l reaction vessel is 20 atm. When a reaction occurs, P4(s) + 6H2(g) => 4PH3 (g).
The force perpendicularly applied to an object's surface divided by the area over which it is dispersed is known as pressure. The gauge pressure, also known as gauge pressure, is the pressure in relation to the surrounding air pressure. To express pressure, a variety of units are employed. The chemical element phosphorus has the atomic number 15 and the letter P in its name. Phosphorus is an element that exists in two main forms, red and white phosphorus, but is never found on Earth as a free element due to its strong reactivity.
Learn more about phosphorus here
https://brainly.com/question/4622631
#SPJ4
during lewin's changing stage managers should
During the Lewin's changing stage, managers should 'give employees the tools for change.'
Lewin's change theory presents a simple and easy-to-understand framework to reinforce the change management process. These three different stages of Lewin's change theory include unfreeze, change, and refreeze, allowing you to plan and implement the required change. It is the changing stage of Lewin's model where it is required to give the employees the tools for change, i.e. new perspectives, new information, and new models of behavior with the implementation of change.
"
This is a fill in blank question and the complete question is as follows:
During Lewin's changing stage managers should ____________ .
"
You can learn more about Lewin's Model at
https://brainly.com/question/4201107
#SPJ4
tell whether the entropy changes for the following processes are likely to be positive or negative: (a) the fizzing of a newly opened can of soda (b) the growth of a plant from seed
Entropy changes are most likely to be favorable during a plant's growth from a seed.
What process experiences a positive change in entropy?The entropy of the universe increases as all spontaneous change takes place. A spontaneous process requires that the total entropy change for the system and its surroundings be positive (+).Free energy must be negative for a process to be spontaneous. This is because free energy changes are linked to enthalpy and entropy changes. A process must always have a positive change in entropy if it is spontaneous.Entropy changes are most likely to be favorable during a plant's growth from a seed.To learn more about Entropy refer to:
https://brainly.com/question/419265
#SPJ4
a 20.00 ml sample of sulfuric acid (h {2}so {4}) is titrated with a 0.100 m solution of sodium hydroxide. the endpoint was reached when 45.65 ml of titrant was added. calculate the molar concentration of sulfuric acid.
Step 1. Write the balanced chemical equation for the reaction
H2SO4 + 2NaOH → Na2SO4 + 2H2O
Step 2. Calculate the moles of NaOH
I assume that the molarity of the NaOH is 1.00 mol/L.
Moles of NaOH = 0.032 75L NaOH × (1.00 mol NaOH / 1L NaOH)
= 0.032 75 mol NaOH
Step 3. Calculate the moles of H2SO4
Moles of H2SO4 = 0.032 75 mol NaOH × (1 mol H2SO4 / 2mol NaOH)
=0.016 375 mol H2SO4
Step 4. Calculate the molarity of the H2SO4
Molarity = moles / litres
=0.016 375 mol / 0.0100 L
=1.64 mol/L
What is the acid's molar concentration?By dividing the number of moles by the number of liters of water utilized in the solution, we can compute the molar concentration. Here, for instance, 1.25 L of water has entirely dissolved the acetic acid. In order to determine the molar concentration, which is 0.1332 M, divide 0.1665 moles by 1.25 L.
What is the water's H2SO4 molar concentration?According to this solution's molal concentration, 4.80 moles of sulfuric acid are present per kilogram of water. Therefore, using the amount of moles (n) and molar mass of sulfuric acid, we may get its mass (m) (MM). Sulfuric acid has a molar mass of 98.079 g/mol.
To know more about molar visit:-
https://brainly.com/question/12127540
#SPJ4
Platinum has a density of 21.4 g/cm3. What is the mass of 5.9 cm3 of this metal?
The mass of 5.9cm3 of the metal is 126.26kg.
What is Density?A body's density is defined as its mass per unit volume. Density is a measurement that compares the amount of matter (denseness) a body has to its volume. It is the degree of consistency of a body measured by the quantity of mass per unit volume. It is the relationship between the mass of the substance or body and the amount of space it takes up. An object with much matter in a certain volume will have a high density.
Density = mass/volume
From the question;
volume = 5.9cm^3
Density = 21.4g/cm^3
Density = mass/volume
therefore; mass = density x volume
mass = 21.4 x 5.9
mass = 126.26kg
Learn more about density:brainly.com/question/1354972
#SPJ1
specify the number of protons, neutrons, and electrons in the neutral atom copper-64.
The neutral atom copper-64 has 29 protons, and 35 neutrons and 29 number of electrons.
The number of electrons, protons, and neutrons of an atom is known from the atomic notation. Atomic notation represents showing the atomic symbol, atomic number, and atomic mass. In some periodic tables of elements, the position of the mass number and atomic number can be written differently, but generally the mass number is written at the top and the atomic number is written at the bottom before the atomic symbol.
The mass number is the number of protons to the number of neutrons. The atomic number indicates the number of protons and the number of protons in a neutral atom equals the number of electrons.
The atom has the atomic symbol Cu (copper) with atomic number 29 and mass number 64. So, it can be concluded that Cu has 29 protons. The number of electrons is the same as the number of protons, namely 29. Meanwhile, the number of neutrons:
Mass number = number of protons + number of neutrons
64 = 29 + number of neutrons
Number of neutrons = 35
So, the number of electrons, protons, and neutrons in the atom is 29, 29, 35.
Learn more about atomic number here: https://brainly.com/question/29361554
#SPJ4
Draw the most stable conformation of 3-isopropyl-1,1dimethylcyclohexane Please show me which one is the isopropyl and the dimethylcyclohexane and why is that the most stable conformation.
The most stable conformation of 3-isopropyl-1,1dimethylcyclohexane equatorial ethyl group (more stable). The stability of ethylcyclohexane's equatorial conformer exceeds that of its axial conformer by 7.4 kJ/mol.
According to the previous section, the chair conformation with the equatorial methyl group is more stable because it reduces steric repulsion, and as a result, the equilibrium favors the more stable conformer. Strongly favoring the equatorial shape is methylcyclohexane. The methyl group is in close proximity to the axial hydrogens in the axial conformation, which has an energetically unfavorable effect known as a 1,3-diaxial interaction. The methyl group prefers the equatorial shape as a result. The conformation of ethylcyclohexane in which the ethyl group is in the equatorial position is the most stable.
Learn more about equatorial ethyl group here:
brainly.com/question/24153313
#SPJ4
a chemist measured the amount of hydrogen bromide produced during an experiment. she finds that of hydrogen bromide is produced. calculate the number of moles of hydrogen bromide produced.
Molar mass of HBr is 80.91194 g/mol.
Molar mass of Br = 79.904
molar mass of H = 1.00794
Molar mass of HBr = 79.904 + 1.00794 = 80.91194
The mass of a sample of a chemical compound divided by the quantity, or the number of moles in the sample, expressed in moles, is known as the compound's molar mass. The molar mass is a bulk property of a material rather than a molecular one. The compound is present in many different forms, each with a different mass as a result of the isotopes. The molar mass is the average of these masses. The molar mass is most frequently calculated using the standard atomic weights and is a function of the relative abundance of the constituent atoms' isotopes on Earth. It is thus a terrestrial average. The conversion between a substance's mass and amount can be done using the molar mass.
Learn more about Molar mass here:
https://brainly.com/question/12127540
#SPJ4
describe what changes occur during positron emission. the mass number and atomic number decreases. the mass number and atomic number increases. the mass number is unchanged and the atomic number decreases. the mass number is unchanged and the atomic number increases. the mass number and atomic number do not change.
During Positron emission the mass number is unchanged and the atomic number decreases.
What is Positron emission?
Nuclear medicine procedures like positron emission tomography (PET) monitor the metabolic activity of the cells in different body tissues. In reality, PET combines nuclear medicine with biochemical analysis. It is produced by a proton-rich nucleus and is an anti-particle of a beta particle. A positron and an electron collide to produce two gamma rays with a mass of 0.511 MeV. Iron, concrete, wood, plastic, water, etc., can all be penetrated by positron gamma radiation to a depth of several inches.
What is the function of positron?
The function of your tissues and organs' metabolic or biochemical processes can be ascertained with the help of a positron emission tomography (PET) scan, a type of imaging treatment. The PET scan uses a radioactive substance (tracer) to show both normal and abnormal metabolic activity.
To know more about Positron emission, visit:
https://brainly.com/question/20388835
#SPJ4
the chemical formula of the trace metal detection fluid used in this exercise is onc10h6oh. based on what you observed about the reaction on your skin, what is happening in this reaction at a chemical level? (additional research may be necessary to answer this question.)
The chemical formula of the trace metal detection fluid used in this exercise is onc10h6oh. Chemical reactions involve the breaking and forming of chemical bonds between atoms in this reaction at a chemical level.
Without more information, it is not possible to accurately determine what is happening in the chemical reaction between the trace metal detection fluid and your skin. The chemical formula C10H6OH suggests that the trace metal detection fluid is a compound containing 10 carbon atoms, 6 hydrogen atoms, and 1 oxygen atom, which could be any number of compounds. In order to accurately determine what is happening in the chemical reaction between the trace metal detection fluid and your skin, it would be necessary to have additional information about the chemical and physical properties of the trace metal detection fluid, as well as the specific observations you made about the reaction on your skin.
In general, chemical reactions involve the breaking and forming of chemical bonds between atoms, resulting in the formation of new compounds. When a chemical reaction occurs on your skin, it may involve the transfer of atoms or molecules between your skin and the chemical, or it may involve the formation of new compounds on the surface of your skin. To determine what is happening in the chemical reaction between the trace metal detection fluid and your skin, you would need to perform additional tests and analyses to identify the specific reactants and products involved in the reaction, and to understand the mechanisms and kinetics of the reaction.
To know more about Chemical reactions please refer: https://brainly.com/question/29762834
#SPJ4
Given the structure below, which IR absorption band is inconsistent with the structure? 2900 cm^-1 1600 cm^-1 1200 cm^-1 1740 cm^-1
The spikes in the IR spectrum are referred to as absorption bands. A carbonyl group (C=O) is indicated by a prominent absorption band in the 1650–1750 cm-1 range. In the IR spectrum of polysaccharide, a prominent and broad band at 3600-3000 cm1 is frequently observed.
What is spectra?
The intensity of the absorption bands in IR spectra can be classified as strong (s), medium (m), weak (w), broad, and acute. The polarity of the bond affects the intensity of an absorption band, therefore a bond with higher polarity will exhibit a more intense absorption band. In general, the characteristic weak but distinct IR absorbance bands in the 2100-2250 cm-1 region can be used to identify alkynes.
To learn more about alkynes from given link
brainly.com/question/23508203
#SPJ4
if two equilibrium reactions are added together, what is the relationship between the equilibrium constants for the individual reactions and that for the overall reaction?
The equilibrium constant for overall reaction is the product of the equilibrium constant of the added reaction.
If two equilibrium reactions are added together, the relationship between the equilibrium constants for the individual reactions and overall reaction is the equilibrium constant for overall reaction is the product of the equilibrium constant of the added reaction.
the reaction is given as :
A + B ⇄ AB
K1 = [AB] / [A] [B]
AB + A ⇄ A₂B
K2 = [A₂B] / [AB] [A]
now the addition of two equation is given as :
2A + B ⇄ A₂B
K overall = [ A₂B] / [A]² [B]
this means : equilibrium constant for overall reaction :
K overall = K1 K2
To learn more about equilibrium constant here
https://brainly.com/question/15319821
#SPJ4
The light observed in a flame test is the absorption that moves an electron from a lower energy level to a higher energy level_ is the emission that occurs when an electron moves from a higher energy level to a lower energy level: occurs because vibrations are excited in a cation: is the Infrared (IR) radiation emitted by a cation;
The light observed in a flame test is the emission that occurs when an electron moves from a higher energy level to a lower energy level.
This occurs because the electron loses energy in the form of light as it moves from one energy level to another. The light emitted is dependent on the type of cation that is present in the flame. Different cations will emit different wavelengths of light due to their unique energy levels.
This is why a flame test is used to identify different elements and compounds. Additionally, infrared (IR) radiation is also emitted by the cation in the flame. This radiation is emitted due to the vibrations of the cation's molecules as they are excited by the heat of the flame. The amount of infrared radiation emitted is also dependent on the type of cation present.
For more questions like Flame test click the link below:
https://brainly.com/question/13706064
#SPJ4
12. Ammonium chromate and aluminum perchlorate
a. Molecular Equation:
b. Complete Iouic Equation:
c. Net Ionic Equation:
d. Particulate drawing:
13. Nickel nitrate and sodium hydroxide
a. Molecular Equation:
b. Complete lonic Equation:
c. Net lonic Equation:
d. Particulate drawing:
14. hydrobromic acid and lead Perchloraze
a. Molecular Equation:
b. Complete lonic Equation:
c. Net Ionic Equation:
d. Particulate drawing:
12) Ammonium chromate and aluminum perchlorate
a. Molecular Equation: (NH4)2CrO4 + Al(ClO4)3 ->
b. Complete Ionic Equation: (NH4)2CrO4 + 2Al3+ + 6ClO4- -> 2NH4+ + CrO42- + 2Al3+ + 6ClO4-
c. Net Ionic Equation: (NH4)2CrO4 + 2Al3+ + 6ClO4- -> 2NH4+ + CrO42-
13) Nickel nitrate and sodium hydroxide
a. Molecular Equation: Ni(NO3)2 + 2NaOH -> Ni(OH)2 + 2NaNO3
b. Complete Ionic Equation: Ni2+ + 2NO3- + 2Na+ + 2OH- -> Ni2+ + 2OH- + 2Na+ + 2NO3-
c. Net Ionic Equation: Ni2+ + 2OH- -> Ni(OH)2
14) Hydrobromic acid and lead perchlorate
a. Molecular Equation: HBr + Pb(ClO4)2 -> PbBr2 + 2HClO4
b. Complete Ionic Equation: H+ + Br- + Pb2+ + 2ClO4- -> Pb2+ + Br2 + 2H+ + 2ClO4-
c. Net Ionic Equation: H+ + Br- + Pb2+ + 2ClO4- -> Pb2+ + Br2 + 2H+
A chemical equation is a written representation of a chemical reaction that shows the reactants, products, and the reactant-product relationships. It is a concise way of describing the changes that occur during a chemical reaction, and it helps chemists understand and predict the outcomes of chemical reactions.
Learn more about chemical equation, here https://brainly.com/question/28294176
#SPJ4
Methane gas reacts with oxygen in a gas stove.
The reaction can be illustrated by the following equation:
Methane + Oxygen leads to carbon dioxide + water.
Identify the role of each substance participating in the reaction.
a. carbon dioxide:
b. methane:
c. oxygen:
d. water:
Carbon dioxide (CO2) and water are the byproducts of this chemical process, which involves methane (CH4) and oxygen (O2) (H2O).Due to O2's molecule having a zero oxidation number, this reaction is both a combustion and a redox reaction.
In an exothermic reaction, 394 kJ/mol of heat is generated when carbon interacts with oxygen to make carbon dioxide. An analysis of the data can demonstrate that the combustion reaction between methane and oxygen is exothermic. Reactants in a chemical equation are the substance(s) to the left of the arrow. When a chemical reaction first begins, a substance is said to be the reactant. It is referred to as a product if there is a substance to the right of the arrow
. To learn more about the chemical reactions it, follow the below link:
https://brainly.com/question/11231920
#SPJ4
Answer: Carbon dioxide: product
Methane: reactant
Oxygen: reactant
Water: product
Explanation: did it!! :p
Why Li_2^+ is more stable than Li_2 ? According to J.D Lee, compounds with fraction bond number are unstable--Li2+ BOND ORDER = 0.5 Li2 BOND ORDER =1 Hence Li2+ must be unstable than Li2 but then why Li2 is more stable than Li2+. Please explain reasons.
The difference in stability between Li2+ and Li2 results from several factors.
First, Li2+ has a fractional bond order, meaning that the electrons in the bond are less strongly held and more easily able to move around. As a result, Li2+ is more reactive and less stable than Li2.
Second, Li2+ has a higher charge density than Li2. This means that it is more tightly held together, making it more reactive and less stable. Third, Li2+ is more likely to form a coordinate covalent bond than Li2. In a coordinate covalent bond, one of the atoms contributes electrons to form the bond, making it more reactive and less stable.
Finally, Li2+ has higher ionization energy than Li2. This means that it is more difficult to remove electrons from Li2+, making it less stable.
In summary, Li2+ is less stable than Li2 due to its fractional bond order, higher charge density, propensity to form coordinate covalent bonds, and higher ionization energy.
For more questions like Stability click the link below:
https://brainly.com/question/9614993
#SPJ4
a glucose solution being administered with an iv has a flow rate of 4.00cm3/min4.00cm3/min . what will the new flow rate be if the glucose is replaced by whole blood having the same density but a viscosity 2.50 times that of the glucose? all other factors remain constant.
If glucose is substituted with whole blood that is the same density but has a viscosity that is 2.50 times that of glucose, the new flow rate will be 1.60cm3/mm.
Q=V/t
Q=Av
R=8ql/πr⁴
Q=P₂ -P₁/R
Q=(P₂ -P₁)πr⁴/8ql
(P₁+(1/2)ρv²+ρgh)Q=power
P₁+(1/2)ρv₁²+ρgh₁=P₂+(1/2)ρv₂²+ρgh₂
Q[tex]_{g}[/tex]R[tex]_{g}[/tex]=Q[tex]_{b}[/tex]R[tex]_{b}[/tex]
Q[tex]_{b}[/tex]=Q[tex]_{g}[/tex]R[tex]_{g}[/tex]/R[tex]_{b}[/tex]
=4.00/2.5=1.60cm³/mm
Viscosity is a fluid's (liquid or gas) resistance to a change in shape or motion of adjacent parts with respect to one another. Viscosity indicates resistance to flow.
viscosity is the ability of a fluid (liquid or gas) to resist change in form or motion of adjacent parts with respect to one another. Viscosity indicates resistance to flow. The fluidity, which measures how easily something may flow, is the reciprocal of viscosity. The viscosity of molasses, for instance, is higher than that of water. Viscosity can be thought of as internal friction between the molecules; this friction prevents the development of velocity disparities within a fluid since a section of a fluid that is compelled to move carries along nearby parts to some degree.
Learn more about Viscosity here:
https://brainly.com/question/2193315
#SPJ4
what is the final concentration of a solution prepared by dilutingwhich molecule below has hydrogen bonding? 6) a) ch 4 b) hcl c) ch 3 ch 2 oh d) h 2 e) all of the above35.0 ml of 12.0 m hcl to a final volume of 1.20 l?
The intermolecular Hydrogen-bonds between CH3CH2OH and H2O are very strong because H atoms are bound to the electronegative O atoms. Therefore, their boiling points are higher.
Does hydrogen bonding occur with CH3OH?Since hydrogen is covalently linked to the more electronegative atom oxygen in the molecule CH3OH, hydrogen bonding is present in this compound.
In ch3oh, how many hydrogen bonds are there?In fact, it results from the fact that whereas each molecule of H2O can generate up to four intermolecular hydrogen bonds, the same molecule of CH3OH can only form up to three.
To know more about Hydrogen-bonds visit:-
https://brainly.com/question/15099999
#SPJ4
4.a) Draw two Lewis structures for HCP; one where C is central and one where P is central: b) Calculate formal charge for each atom in each structure: Which structure is favored? Explain your answer: 5. a) Draw all possible resonance structures for HCOSel (C is central) b) Calculate formal charge for each atom in each structure: Which structure is favored? Explain your answer:
One Hydrogen atom (H) and one Oxygen atom (O) surround the central Carbon atom (C) in the HCP Lewis structure (O). Carbon (C) and Phosphorus (P) have a triple bond, and Carbon (C) and Hydrogen (H) have a single bond.
How can you choose the ideal format for a formal charge?The Lewis structure with the negative formal charges on the most electronegative atoms is the one to choose from when faced with a choice between numerous Lewis structures with similar formal charge distributions.
How do you determine the preferred resonance structure?The resonance forms with the fewest non-zero formal charge atoms are selected. Resonance develops atoms that have a negative formal charge or are the most electronegative are preferred.
To know more about Lewis structure visit:-
https://brainly.com/question/20300458
#SPJ4
2. Which process best demonstrates a chemical change in distilled water?
A. Freezing the water
B. Separating the water into its
elements
C. Calculating the water's density
D. Dissolving sugar in the water
A chemical change involves breaking or making or chemical bonds and the formation of new products. Thus, the separating water into its elements breaks a chemical bond and it is a chemical change.
What is a chemical change?A chemical change involves breaking or making of chemical bonds and the formation of new products. Whereas, a physical change involves no changes for chemical bonds.
Changes in states, dissolving solutes, freezing etc are physical changes and does not involves formation of new products. Measuring physical quantities are based on these physical changes.
Water when decompose into its constituent elements, it is undergoing a chemical change. Here, elements separated from water are the products of this decomposition reaction. Thus, option B is correct.
To find more on chemical changes, refer here:
https://brainly.com/question/23693316
#SPJ1
draw the organic product formed when 1−hexyne is treated with h2o, h2so4, and hgso4. click the draw structure button to launch the drawing utility.
The organic product formed when 1−hexyne is treated with H₂O, H₂SO₄, and HgSO₄ will be 2-hexanone (structure attached).
This reaction is an example of an oxymercuration reaction of the organic product 1−hexyne.
Oxymercuration is shown in three steps to the right. The nucleophilic double bond attacks the mercury ion, releasing an acetoxy group. The mercury ion's electron pair attacks carbon on the double bond, generating a positive-charged mercuronium ion. Mercury's dxz and 6s orbitals give electrons to the double bond's lowest unoccupied molecular orbitals.
In the second stage, the nucleophilic H₂O attacks the highly modified carbon, freeing its mercury-bonding electrons. Electrons neutralize mercury ions by collapsing. Water molecules have positive-charged oxygen.
In the third stage, the negatively charged acetoxy ion released in the first step attacks the hydrogen of the water group, generating the waste product HOAc. The two electrons in the oxygen-hydrogen link collapse into oxygen, neutralizing its charge and forming alcohol.
You can also learn about organic products from the following question:
https://brainly.com/question/13513481
#SPJ4
what happens to acid when heated
Answer:
What happens to acid when heated? When heated, the pure 100% acid loses sulfur trioxide gas, SO3, until a constant-boiling solution, or azeotrope, containing about 98.5% H2SO4 is formed at 337°C. Hot concentrated sulfuric acid reacts with most metals and with several nonmetals, e.g., sulfur and carbon.
Explanation:
how deep under the surface of a body of water would the pressure be double that at the surface? (1 atm
The pressure would be double that at the surface when 10 m under the surface of a body of water.
How deep under the surface of water would the pressure be double that at the surface?The deeper you go under the sea, greater is the pressure of the water pushing down on you. For every 33 feet (10.06 meters) you go down, pressure increases by one atmosphere
At sea level, pressure of the air that surrounds us is equal to 1 atmosphere. Diving 10 meters deep causes pressure to be doubled as water is much denser than air, it exerts a greater compressive force on your body.
To know more about pressure at depth, refer
https://brainly.com/question/26101731
#SPJ4
ionic compound cation anion NaCl Na Cl Fel (Nos), CrS 2 NHACl Mn(504) 2
The table in the given image is filled in the explanation section, the respective cations and anions are written.
Cations are positively charged while anions are negatively charged species.
In the given ionic compound NaCl, the cation is sodium ion i.e., Na+ and an anion is chloride ion i.e., Cl-. In the given compound FeI2, the cation is Fe2+ and anion is I-. In the given compound, Fe(OH)_3, the cation is Fe3+ while the anion is OH-. In the given compound (NH_4)2S, the cation is NH_4+ and anion is S2-. In the given compound Mn(NO_3)_2, the cation is Mn2+ and anion is NO3-.
To learn more about cation check the link below:
https://brainly.com/question/22212642
#SPJ4
Complete question:
ionic compound cation anion NaCl Na Cl Fel (Nos), CrS 2 NHACl Mn(504) 2
