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.
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lmk, due in 30min!!!!!!!!!!!!!!!!
The conclusion that is consistent with the explanation is that substance C is a mixture because it contains 2 different compounds. Option C.
What are mixtures?Mixtures are substances that contain two or more different substances mixed together. These mixed substances do not react together but maintain their chemical identities such that each can be recovered by physical means.
Thus, when a mixture is examined, it can be found to contain more than one compound. These mixtures are separatable by physical separation methods such as filtration, evaporation, decantation, etc.
Thus, the conclusion that goes with the right explanation is that substance C is a mixture because it contains 2 different compounds.
Option A is incorrect because mixtures do not require running an electric current through them for separation. B is incorrect because a substance being consistent does mean that it is pure. D is incorrect because a substance being pure does not mean it won't react.
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nitrogen-17 is a beta emitter. what is the isotope produced in the radioactive decay?
If this experiences beta-minus decay, oxygen-17 isotope will be created during radioactive decay.
Why is something radioactive?As the term implies, radioactivity is actually the process of producing radiation on its own. This is done by a type of atom that, for certain reason, appears to be unstable "wanting" to give up some energy in order to shift its configuration towards a more stable one. Radionuclides are made up of molecules that do have radioactive atoms and produce atomic radiation.
What causes radioactivity in atoms, and why?Atoms can be stable or unsteady in the natural world. An element is stable if the forces exerted by its component parts are equal. An element is insecure if these interactions are out of equilibrium or if nuclei have an overwhelming degree of internal energy (radioactive).
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if the volume of the gas sample is decreased to 19.1 l holding the temperature constant, the number of molecule-wall collisions per unit area per unit time will
The number of molecule-wall collisions per unit are time will be the same as ideal gas law is applicable to ideal gases only.
The equation for ideal gas law is Pv = nRT. Ideal gasses are the perfect gases to follow idealism. Ideal gas equation is the mathematical expression that relates pressure, volume and temperature at the same time.
Mathematically, Pv = nRT is,
P = Pressure of the gas
v = Volume of the gas
n = Number of moles
R = gas constant (0.0821 L.atm/K.mol)
T = Temperature of the gas.
In the given condition, the volume of the sample is decreased to 19.1 liter keeping the temperature same. Therefore, the number of collisions per unit area remains constant for the given condition of the sample of gas.
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Question 5 of 42 The driving factor for solution formation is A) entropy B) enthalpy C) temperature D) molar mass of the molecules
The driving factor for solution formation is a) entropy Remember that entropy is a measure of the amount of disorder in a system
Entropy, broadly speaking, serves as a metric for energy quality, with lower entropy indicating higher quality. Entropy is lower for energy that has been carefully organized (the efficient library). The random-pile library is a chaotic energy storage system with high entropy. The overall entropy of a system never decreases; according to the second law of thermodynamics, it always either rises or stays the same. Entropy is the opposite of negentropy. This suggests that order is gaining ground. Order implies organization, structure, and function and is the antithesis of randomness or chaos. The solar system is an example of a star system with negative entropy. Negentropy is entropy's opposite.
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108xe is expected to be stable.
Two extremely long-lived isotopes and seven stable isotopes make up naturally occurring xenon (54Xe). The isotope with the shortest half-life, 108Xe, has a half-life of 58 s.
There are two extremely long-lived isotopes and seven stable isotopes in naturally occurring xenon (54Xe). Among the nuclides with the longest measured half-lives are 124Xe and 136Xe, which both exhibit double electron capture and double beta decay. The half-lives of 124Xe are 1.8 0.5(stat) 0.1(sys) 1022 years and 2.165 0.016(stat) 0.059(sys) 1021 years, respectively.
A significant role for the man-made isotope 135Xe is played in nuclear fission reactor functioning. The thermal neutron cross section of 135Xe is extremely large.
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for which one of the following is the enthalpy of the reaction the same as the enthalpy of formation?
The enthalpy of production of a compound is the difference in enthalpy between the reactants (elements in their standard condition) and the complex itself (product).
What does enthalpy of formation mean?The standard reaction enthalpy for the creation of the chemical from its constituent parts (atoms or molecules) in the most stable reference states at the selected temperature (298.15K) so at 1bar pressure is known as the enthalpy of formation.
The reaction whose standard enthalpy of production is so named?The enthalpy change that occurs when one mole of any compound is created from its component components in their standard states is known as the "standard enthalpy of production." The reaction 2 C (graphite) + 3 H2 (g) C2H6 is what is referred to as the enthalpy of production of one mole of ethane gas (g).
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draw the final product of this series of reactions.
The final product of this series of reactions will be (R)-2-ethyl-3-methylbutanenitrile.
In this reaction, SOCl2 functions as a chlorinating reagent. The chlorine ion is produced as a byproduct of the alcohol group's attack on the sulphur atom. The deprotonation then takes place after that. After this, the chlorine group was replaced while successfully removing the SO2 group. The retention of the stereochemistry occurs at this stage.
In the second stage of the reaction, the chlorine ion is eliminated by an attack from the CN- anion. The SN2 reaction occurs during this step reaction. The stereochemistry of the product is inverted as a result of this reaction.
The complete question and the reaction mechanism are attached.
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ammonium phosphate nh43po4 is an important ingredient in many fertilizers. it can be made by reacting phosphoric acid h3po4 with ammonia nh3. what mass of ammonium phosphate is produced by the reaction of 1.00g of phosphoric acid? be sure your answer has the correct number of significant digits.
When 4.9 g of phosphoric acid and 7.45 g of ammonia combine, 7.45 g (NH4)3PO4 of ammonium phosphate is created.
Ammonium phosphate is a crucial fertilizer, but why?Further assisting growth and root development is the supply of nitrogen to the surrounding soil, which is frequently accomplished using fertilizers containing ammonium phosphate. Because of its solubility, it can be quickly released into the soil, helping young plants and plants in need of revival.
What type of substance is ammonium phosphate, NH4 3po3?The inorganic chemical with the formula (NH4)3PO4 is called ammonium phosphate. It is the orthophosphoric acid ammonium salt.
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what is the molar solubility of fe(oh)2 at 25°c if ksp of the compound is 7.9 × 10–16?
If the compound's ksp is 7.9 10-16, then fe(oh)2's molar solubility at 25°C is 25.8 10-6 M.
What does the word "compound" mean simply?(KOM-pownd) a material created by joining two or more distinct elements chemically in science. Examples of compounds are table salt (Nahco3), which is generated from of the atoms sodium and chloride, and water (Hydrate), which is created from the components hydrogen and oxygen.
Since when is freshwater a compound?It is a compound since it is made up of water molecules. There are no genuine water atoms. Two atoms of oxygen and one hydrogens, in that order, make up each water molecule.
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Why is benzene an aromatic hydrocarbon?
Because it adheres to Hückel's criterion, benzoene is an aromatic hydrocarbon.Because of its scent, or "aromatic" smell, benzene was once thought to be aromatic.
What makes benzene an aromatic hydrocarbon?Because of their distinct scents, benzene-like compounds were previously referred to as aromatic hydrocarbons.Any substance that has a benzene ring or exhibits certain benzene-like characteristics is now considered to be an aromatic chemical.
How can you establish that benzene is aromatic?Benzene's aromatisability According to the Huckel rule, an aromatic ring must possess the following characteristics:Planarity.total delocalization of the ring's electrons.the ring contains (4n + 2) electrons, when n is a constant
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Draw a Lewis structure for methyl isocyanate, CH3NCO, showing all valence electrons. Predict all bond angles in this molecule and the hybridization of each C, N, and O.
Lewis structure for methyl isocyanate, CH3NCO, showing all valence electrons. 60 degree, 60 degree and 120 degree are all bond angles in this molecule and the hybridization of each C, N, and O.
The valence shell electrons in a molecule are depicted in an extremely simplified manner by a Lewis Structure. It is used to demonstrate how the electrons in a molecule are positioned around particular atoms. Electrons are shown as "dots" or, in the case of a bond, as a line connecting the two atoms. The octet rule and formal charges must be met in order to achieve the "optimal" electron configuration. Lewis structures use the chemical symbol for each atom to show where it is located within the molecule's structure. Atoms that are joined together are separated by lines (pairs of dots can be used instead of lines). The extra electrons that form lone pairs are shown next to the atoms as pairs of dots. Hydrogen (H) can only form bonds that share two electrons, whereas main group elements of the second period and beyond often react by acquiring, losing, or sharing electrons until they have reached a valence shell electron configuration with a full octet of (8) electrons.
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c. at what pressure is the breakdown voltage a minimum? d. what air gap spacing d at 1 atm gives the minimum breakdown voltage? e. what would be the reasons for preferring gaseous insulation over liquid or solid insulation?
a. The breakdown voltage of air is a function of pressure and air gap spacing.
b. The minimum breakdown voltage occurs when the applied voltage reaches a critical value, which depends on the pressure and air gap spacing.
c. The minimum breakdown voltage occurs at atmospheric pressure (1 atm).
d. The minimum breakdown voltage occurs when the air gap spacing is 1 mm.
e. Gaseous insulation is preferred over liquid or solid insulation because it is more reliable, has higher dielectric strength, and is less likely to become contaminated or corroded. Additionally, gaseous insulation can be used in a wider range of operating temperatures.
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two solid reactants of varying size are combined in a vessel assuming that the same mass of each reactant is sued in each case, which of the following represents the conditions that will result in the fastest reaction rate
All of these changes will increase the rate of a reaction.
Which of the following describes the sort of interaction between the atoms that takes place in the circled regions the strongest?Ionic Substances, The ionic bond, which occurs when two ions with opposite charges are drawn to one another, is the strongest force that can exist between any two particles. Ionic interactions are therefore another kind of intermolecular interaction between particles.Because the Xe atoms in sample 2 are closer together, there will be more intermolecular attractions, causing the gas to behave less as it should.Since ammonia is a base and vinegar is an acid, a neutralization reaction would take place.To learn more about reaction rate refer to:
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Which element has the electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d3?
The element with the electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d3 is Manganese(Mn).
Manganese is a transition metal located in period 4 and group 7 of the periodic table. Its atomic number is 25, and it has 25 protons, 25 electrons, and 35 neutrons in its nucleus.
Manganese is a silvery-gray metal that is hard and brittle. It has a melting point of 1245°C and a boiling point of 2095°C. It is reactive with air, water, and acids, and it is paramagnetic, meaning it can be magnetized in an external magnetic field.
Manganese is an essential element for human health and is found in many foods. It is also used in steel and alloy production, as a catalyst, and in batteries. It is also used in the production of fertilizers, and it is used to make pigments, dyes, and medicines.
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assume the substance represented by the heating curve has three phases (solid, liquid, and vapor) under atmospheric pressure. which statement is true? g
Assuming the substance represented by the heating curve has three phases (solid, liquid, and vapor) under atmospheric pressure, it is true that a stove burner will supply heat at a roughly constant rate.
What is a heating curve?
The heating curve is the relationship between the outlet temperature of the heating system and the outdoor air temperature. The heating curve determines the temperature to which the DHW boiler should heat water at a given outdoor temperature. This relationship is described using two parameters: the slope of the curve and its level. The prototype of the heating curve was the so-called 'Stoker's table', which helped to determine the desired outlet temperature of the heating system depending on the outdoor temperature.The prototype of the heating curve was the so-called 'Stoker's table', which helped to determine the desired outlet temperature of the heating system depending on the outside temperature.To know more about heating curves, click the link given below:
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What is the IUPAC name for this compound? Interactive 3D display mode H3C~CH ethanal 1-ethanone methanal 1-ethanaldehyde methyl aldehyde Submit Request Answer
The IUPAC name for this compound is 1-ethanone, which is also known as ethanal or acetaldehyde. It is a simple aldehyde containing a carbon atom bonded to a hydrogen atom and a hydroxyl group (-OH), with the carbon atom also bonded to a methyl group (-CH3). The "1-" prefix in the name indicates that the carbon atom of the hydroxyl group is bonded to the first carbon atom in the chain, which is the one attached to the methyl group.
The IUPAC name (International Union of Pure and Applied Chemistry) is a standardized method for naming chemical compounds. It uses a set of rules to assign a unique and predictable name to each chemical compound, based on its molecular structure. The IUPAC name is important because it allows chemists to communicate clearly and accurately about the substances they are working with, and it helps to ensure that the same compound is not given different names by different people.
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Which has a greater mass? A- Electron B-Proton C- They have equal masses E- Not enough information
Although protons and neutrons are similar in size, they are both significantly heavier than electrons (approximately 2,000 times as massive as an electron).
A proton's positive charge is equivalent to an electron's negative charge in strength. The proton is a stable subatomic particle with a rest mass of 1.67262 1027 kg, or 1,836 times the mass of an electron, with a positive charge that is equivalent to one electron's charge in magnitude.
The mass of a neutron is somewhat more than that of a proton. These are frequently expressed in terms of atomic mass units, where one atomic mass unit is equal to 1/12th the mass of an atom of carbon-12. As a result, neutrons have the most mass. Proton mass is 1.6726219 1027 kg.
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Average Water Harsness Is Stated AsWater Hardness Is Stated As
According to general recommendations, fluids should be categorized as soft up to 60 mg/L (milligrams per liter) of calcium carbonate, moderately hard between 61 and 120 mg/L, hard between 121 and 180 mg/L, and very hard over 180 mg/L.
What is the formula for water hardness?
The formula for calculating hardness is hardness = 2.497 (Ca) + 4.118. (Mg). As a result, changes in the magnesium pool have a higher impact on hardness than changes in the calcium pool. Calcium and magnesium, which make up the bulk of hardness, are advantageous to people.
How is the hardness of water determined?
The most popular method for determining hardness is colorimetric titration using an EDTA solution. A titration entails gradually adding titrant solution and indicator solution to a water sample until the sample's color changes. Using a burette or a water hardness test kit, you can titrate a sample for total hardness.
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Dilute a solution that has an initial concentration of 0.03% to 0.0006%.
The solvent that must be added to dissolve a 0.03% solution to a 0.0006% solution is 49 times its original volume.
Dilution is a solution to which solvent is added. A common solvent is a water. Equation expressing dilution
V₁ M₁ = V₂ M₂
V₁ = the initial volume of solution before dilutionV₂ = the volume of solution after dilutionM₁ = the concentration of the solution before dilution = 0.03%M₂ = the concentration of the solution after dilution = 0.0006%V₁ × 0.03% = V₂ × 0.0006%
V₂ : V₁ = 0.03% ÷ 0.0006%
V₂ : V₁ = 50
V₂ = 50 V₁
Added solvent
V₂ - V₁ = 50V₁ - V₁ = 49V₁
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g which statement best describes a concentration cell when the solutions in each compartment are 0.50 m?
What statement about a concentration cell best represents it when the solutions for each compartment is 0.50 m The cell potential is zero.
What does cell potential mean?The potential difference between the electrodes of an electrochemical cell, which results from the flow of electrons through an unbalanced cell's external circuit, is known as the cell potential.
What other name does cell potential go by?The normal cell potential, also called the standard electrode potential, belongs to a class of potentials. The potential difference in between cathode and anode is what determines a cell's inherent potential. At 298 K, 1 atm, and 1 M solutions, all standard possibilities are measured.
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according to arrhenius theory, what is an acid? a substance that contains a high concentration of hydrogen ions in solutions with water. a substance that will lower the hydrogen ion concentration when placed in water. a substance that has an h in its formula. an electron pair donor. an electron pair acceptor.
When introduced to water, an Arrhenius acid raises overall concentration of Hydrogen ion ions in the solution. These H+ ions combine to create the hydronium ion (H3O+).
How improve Arrhenius’ definition?An Arrhenius base increases the concentration or hydroxide (OH-) ions while an Arrhenius acid increases the concentration if hydrogen (H+) ions in an aqueous solution. Because of this, an Arrhenius acid-base reaction is a neutralisation reaction when an acid as well as a base interact.
According to Arrhenius, what is acid?According to Arrhenius, bases are hydroxide compounds who dissociate to produce OH- ions in the presence of water, whereas acids are helium compounds that do the same.
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Which of the following is an example of quantization? A. The temperature range in a classroom B. The number of students in a classroom C. The amount of time spent in a classroom D. Learning happening in a classroom
Answer:
A. The temperature range in a classroom
Explanation:
Quantization works on continuous data, meaning that the data can't be just integers like the number of students in a classroom or the time spend in a classroom.
Answer: B. The number of students in a classroom
Explanation: Quantization refers to the process of representing a continuous variable with discrete values. In this case, the number of students in a classroom can be quantized because it can only take on certain discrete values, such as whole numbers as there cannot be a fraction of a student.
What parameter does the detector measure directly?
a. Absorbance
b. Total incident light shining on the cuvette (lo)
c. Light transmitted through the cuvette (lt)
d. Wavelength
Total incident light shining on the cuvette is the parameter that the spectrophotometer's detector measures directly.
A spectrophotometer is a device used to gauge electromagnetic radiation strength at various wavelengths. The spectrophotometer measures the light intensity of a sample by passing a light beam through it. Each substance in the solution either absorbs or transmits light of a particular wavelength when it is passed through the sample using a light beam. A spectrophotometer, which consists of two instruments, a spectrometer and a photometer, is used to measure spectrometry. Light sources are necessary for spectrophotometers to function. Light sources can be different in nature and utilise a wide band of wavelengths including visible, UV and IR due to the large range of samples.
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how many ml of 0.218 m sodium sulfate react with exactly 25.34 ml of 0.113 m bacl2 given the reaction:
Exactly 25.34 mL of 0.113 m bacl2 and 13.1 mL of sodium sulphate in solution of 0.218 m react. The inorganic substance sodium sulphate has the formula Na2SO4.
Number of milli moles of BaCl2 is equal to the molarity of BaCl2 times the volume of BaCl2 solution in mL, which is 0.113 M times 25.34 mL, or 2.86342 mmols.
Na2SO4 + BaCl2 = BaSO4 + 2NaCl
In light of the equation's balance,
The formula for calculating the amount of Na2SO4 needed is: Millimoles of BaCl2 X the volume of Na2SO4 solution in mL = 2.86342 mmols.
Needed volume of Na2SO4 solution divided by 0.218 M equals 2.86342 mmols.
Needed sodium sulphate solution volume: 13.1 mL
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The complete question is -
how many ml of 0.218 m sodium sulfate react with exactly 25.34 ml of 0.113 m bacl2 given the reaction: Na2SO4 + BaCl2 = BaSO4 + 2NaCl.
nonpolar aromatic compounds were separated by hplc on an octadecyl silyl (c18) bonded phase. the eluent was 65 vol% methanol in water. how would the retention times be affected if 90% methanol were used instead?
Retention times will increase if 90% methanol were used instead of 65%. The amount of solvents completely decides the elution of compounds in HPLC.
How is the retention and elution affected in the HPLC?The elution order of solutes in HPLC is governed by the polarity. For a normal-phase separation, solute of lower polarity spends less time in the polar stationary phase and elutes before a solute that is more polar.
Polar compounds in the mixture passing through the column will be adsorbed more strongly to the polar silica than nonpolar compounds, which passes more quickly through the column and will be eluted quicker than polar ones.
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PQ-L. pnceptuci Which sample has the largest mass? a) 1 mole of marshmallows (C) 1 mole of COz (carbon dioxide) molecules b) 1 mole of Pb (lead) atoms d) All of these have the same mass
The sample which have the largest mass is the correct option is a) 1 mole of marshmallow.
The expression for number of moles is given as follows :
number of moles = mass / molar mass
mass = moles × molar mass
molar mass of marshmallow = 210.14 g/mol
molar mass of carbon dioxide = 44 g/mol
molar mass of Pb = 207.2 g/mol
it is clear form the above equation that the sample which has the larger the molar mass has the largest mass. the order of the mass in the following sample is given as :
marshmallows > Pb > CO₂
Thus the 1 mole of the marsh mallows has the largest mass among the following sample.
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will a precipitate form when 0.1 l of 0.00001m agno3 is added to 0.01 l of 0.001m nacl? (ksp of agcl
A precipitate will be formed when 0.1 l of 0.00001m agno3 is added to 0.01 l of 0.001m NaCl, as Qsp > Ksp
Firstly calculating concentration of Ag+
M1V1=M2V2
where, M1 = 0.00001 M and V1= 0.1 L
While M2= ? and V2= 0.11 L
0.00001×0.1 = M2 ×0.11
M2= 9 × 10^-6 M
Calculating the concentration of Cl-
M1V1=M2V2
where, M1 =0.001 M and V1=0.01 L
Substituting the value in the equation
While M2= ? and V2= 0.11 L
0.001×0.01 = M2 ×0.11
M2= 9 × 10^-5
Qsp = [Ag+] × [Cl-]
Substituting the value in the equation
Qsp= 9 × 10^-6 × 9 × 10^-5
Qsp= 8.1 × 10^-10
Here, Ksp of AgCl= 1.5 xx 10^(-10)
Qsp>Ksp
Therefore precipitate will form.
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Use your knowledge of electronegativity to pick out the most polar bond in the list below. O O-H O O-N O C-H ON-H O 0-C
The most polar connection is F-H.
What type of bond has the highest electronegativity?
The most electronegative element is fluorine. Therefore, carbon and fluorine exhibit the largest variation in electronegativity (C - F). The most polar bond is the C-F one as a result.
How do you tell which connection is the most polar?
The bond is more polar the more electronegativity there is between the two atoms. The difference in electronegativity must be greater than 0.4 on the Pauling scale to be regarded as a polar bond.
Is OO ionic, nonpolar, or polar?
Answer and justification Since the two oxygen atoms share an electron, an O-O connection is covalent. Since the atoms connected together are identical oxygen atoms, the connection is also nonpolar.
Is HF more polar or O-H?
Fluorine is more electronegative than oxygen. Thus, compared to Fluorine in HF, oxygen in H2O draws electrons from hydrogen less strongly. H2O is therefore less polar than HF.
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How many moles of a gas are in a 2.2 liter balloon at 0.79 atmospheres and 85°C?
Answer: n= 0.059 moles of gas
Explanation:
i hope this helps
Answer:
n= 0.059 moles of gas
Explanation:
0.059 moles of gas
Step-by-step explanation:
P=600/ 760
P=0.79atm
then
n = PV/RT
n= 0.79 X 2.2 / 0.08206 X (85+273)
n= 0.059 moles of gas
how many grams of sodium lactate are needed to prepare 11.5 liters of ringer's lactate?
To create 11.5 litres of Ringer's lactate, 4.19 gram of sodium lactate is required per the question.
What use does sodium serve in chemistry?In the some nuclear reactor, sodium is employed as a heat exchanger. It is also utilized as a reactant in the chemical sector. In contrast, sodium salts are more useful than sodium itself. Sodium chloride is the most prevalent sodium compound (common salt).
Briefing:Concentration of NaC₃H₅O₃ = 3.25mM
= 3.25*10⁻³M
Volume = 11.5 litre
Molar mass of NaC₃H₅O₃ = 112g/mol
No. of moles of NaC₃H₅O₃
= Concentration of NaC₃H₅O₃ * volume
= 3.25*10⁻³ * 11.5
= 37.38*10⁻³
=3.738*10⁻²
0.037 mol
Therefore,
Mass of NaC₃H₅O₃
= No. of moles of NaC₃H₅O₃ * Molar mass of NaC₃H₅O₃
= 0.037*112
= 4.19 grams
Hence, the required mass of NaC₃H₅O₃ is 4.19 g
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The complete question is-
An aqueous solution known as Ringer's lactate is administered intravenously to trauma victims suffering from blood loss or severe burns. The solution contains the chloride salts of sodium, potassium, and calcium and is also 3.25 mM in sodium lactate (NaC₃H₅O₃).
How many grams of sodium lactate are needed to prepare 11.5 liters of Ringer's lactate?
