As stated, it takes 45.6 KJ of energy to turn 70.6 grams from ice at 0.00°C into water at 75.0°C.
What does the word "energy" mean in chemistry?Heat energy is the term used to describe the energy found inside chemical bonds (molecules and atoms). It is discharged during the chemical reaction, which is known as an endothermic and produces heat mainly as a byproduct.
Briefing:The amount of heat required to increase the temperature is provided as
Q = m*c*ΔT
where c is specific heat, delta T is the change in temperature, and m is mass in grams.
Placing all of the values we have obtained,
Q = 70.6 x 4.18 x ( 75 - 0)
Q = 22133.1 J
The total energy = Q + heat of fusion
Heat of fusion is 333 J/g ,
so for 70.6 grams , it will be 333 x 70.6 = 23509.8 J
So the total energy = 22133.1 + 23509.8 = 45642.9 J
or 45.6 KJ
Consequently, 45.6 KJ of energy is required to transform 70.6 grams from ice at 0.00°C into water at 75.0°C.
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The complete question is-
How much energy is needed to convert 70.6 grams of ice at 0.00°c to water at 75.0°c?
Specific heat (ice) = 2.10 J/g°C
Specific heat (water) = 4.18J/g°C
Heat of fusion = 333 J/g
Heat of vaporization = 2258 J/g
13. Ture/False: All Entropies Of Fusion Are Negative. True Fusion Leads To Less: Ture/False: All entropies of fusion are negative: True fusion leads to less microstates (degrees of freedom) Falsc fusion leads t0 more microstates (degrees of freedom) False fusion leads to less microstates (degrees freedom} True fusion leads t0 more microstates (degrees of freedom} This problem has been solved! See the answer
True. Fusion leads to more microstates ( degree of fusion). so, All entropies of fusion are negative.
Entropy is defined as the the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work. Because work is obtained from ordered molecular motion the amount of entropy is also a measure of the molecular disorder or randomness of a system. The entropy of fusion is the increase in entropy when melting a solid substance. This is almost always positive since the degree of disorder increases in the transition from an organized crystalline solid to the disorganized structure of a liquid. The entropy of fusion is negative for helium-3 at temperatures below 0.3 K. Entropy of fusion is also negative for helium-4 at temperatures below 0.8 K.
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Question 22 Cr is a member of which family? a. noble gases b. halogens c. alkaline earth metals d.alkaline metals e.None of these
The right response is E none of these since () is a .
:
are typically powerful and hard substances. These metals have high melting and boiling points. The family of includes strong, malleable substances that may be hammered, twisted, and pulled into wires. They are also efficient in carrying heat and electricity. Atoms in these metals are attracted to one another strongly. Usually, they are shiny as well.
is a chemical element with the atomic number 24 and the letter Cr. It is the first component in group 6. It belongs to the transition metal family and is brittle, tough, glossy, and steely-grey in color.
The great corrosion resistance and hardness of metal make it valuable.
The discovery that steel could be rendered extremely resistant to corrosion and discoloration by adding metallic to make stainless steel was a significant advancement in the production of steel.
85% of commercial use is made up of stainless steel with chrome plating (electroplating with chromium).
is highly prized for its ability to be finely polished while remaining tarnish-resistant.
Nearly 70% of the visible spectrum and approximately 90% of infrared light are reflected by polished chromium.
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7. During titration, a stopcock is used to O clamp and secure the titrator O measure exactly 5 mL of titrant O release one drop at a time from the titrator O add NaOH to the titrator 8. The volume of titrant used during a titration will always be the exact same throughout three trials. O True O False 9. The concentration of acetic acid in vinegar is represented by the units O mL/mol O mol/L O mL O mol
The answers include the following;
During titration, a stopcock is used to release one drop at a time from the titrator.The volume of titrant used during a titration will always be the exact same throughout three trials is referred to as a false statement.The concentration of acetic acid in vinegar is represented by the units is mL.What is Titration?This is referred to as a technique done in the laboratory where a solution of known concentration is used to determine the concentration of an unknown solution.
It involves the use of a burette, pipette etc in whic the stopcock is used to release one drop at a time from the titrator for an accurate result.
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draw curved arrows to show the mechanism of deprotonation that generates an enolate ion.
The mechanism of deprotonation can be seen by resonance in the enolate ion.
Understanding the location of electrons and being able to draw the curved arrows that depict the mechanisms by which the reactions occur is one of the most critical tools for learning organic chemistry since they allow us to understand what controls reactions, and how reactions proceed.
Before we do this, we need to understand that a bond is due to a pair of electrons shared between atoms. When asked to draw a mechanism, curved arrows should be used to show all the bonding changes that occur.
When the charge shifts from the alpha carbon to the second, it becomes positively charged and the other carbon where the atom has shifted to, it becomes negatively charged.
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g what is the equilibrium constant at 298 k for the spontaneous reaction that occurs when a cu2 1cu half-cell is connected to a ag iag half-cell? 0.34 0.80
The standard electrode potential of the connected cell is 0.46. Thus, the equilibrium constant for the spontaneous redox reaction is 1.0.
What is electrode potential?The standard electrode potential of an electrochemical cell is the potential difference occurred between two electrodes. The redox reaction involving oxidation of one species and reduction of another species is taking place at corresponding standard electrode potential of each metal electrodes.
Here, copper metal undergoes oxidation at an electrode potential of 0.34 V and silver metal reduces at 0.80 V. The standard electrode potential of the cell is:
E⁰ cell = E⁰ cathode - E⁰ anode
= 0.80 - 0.34 = 0.46 V.
The relation between E⁰ cell and equilibrium constant K is written as follows:
E⁰ cell = - RT ln K.
thus, at 298 K the equilibrium constant is calculated as follows:
K = ln⁻¹ (0.46 V/ (8.315 × 298 K))
= 1.0
Therefore, the equilibrium constant for the redox reaction is 1.
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Why is Venus called Earth's "sister planet"?
Venus now and again referred to as Earth's “sister planet” or Earth's twin. It is a terrestrial planet due to comparable size, mass, proximity to the Sun, and bulk composition to the ones of the Earth's.
Venus has lengthy been taken into consideration Earth's dual sister. The planets are very comparable in a few respects and proportion many bodily and orbital characteristics: internal planets. Venus is the second one planet from the Sun. As an indoors planet to Earth, Venus seems in Earth's sky in no way a ways from the Sun, both as morning famous person or night famous person.
Hence, Venus is called Earth's sister planet due to the fact each planets are plenty much like every other.
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determine the percent yield if 21.8g of k2co3 is produced from reacting 27.9g ko2 with 29.0l of co2
According to the given statement, the percent yield K₂CO₃ is 80.47 %is produced from reacting 27.9g ko2 with 29.0l of co2 .
What is K2CO3 used for?Potassium carbonate is widely used for the production of glass and soap. It is also used as a drying agent which is mild in nature. Many wine production processes involve the use of this compound as a buffering agent. Potassium carbonate is also used as a fire suppressant.
Briefing:Mass of = 27.9 g
Volume of = 29.0 L (At STP)
Molar mass of = 71.10 g/mole
Molar mass of = 44 g/mole
Molar mass of = 138.21 g/mole
Now we have to calculate the percent yield of K₂CO₃
% yield of K₂CO₃ =Actual yield of K₂CO₃ /Theoretical yield of K₂CO₃*100
= 21.8g/27.9g*100
=80.47%
Therefore, the percent yield of K₂CO₃ is, 80.47 %
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what would be the initial effect on deep water chemistry if a large mass of organic matter (i.e., much larger than normal for the site) is delivered from the photic zone to the deep ocean floor, all else being unchanged?
Disputes help us learn more about how carbon moves through a sizable pool of dissolved organic materials in the Earth's oceans.
What does it mean when dissolved organic carbon is found in water?It implies that high DOC is advantageous to an ecosystem since it serves as the main food supply for aquatic food webs. However, DOC can also worsen light attenuation and raise water body acidity, both of which have a negative impact on phototrophic species in aquatic environments.
How crucial is dissolved organic matter?Because DOM is one of the most major sources of bioavailable organic carbon in aquatic ecosystems, its quantity and composition are crucial. It is a complex soluble organic substance whose reactivity and ecological function vary.
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How many protons (p) and neutrons (n) are in an atom of calcium-46?
a. 20 p.26 n b. 26 p.20 n c. 46 p.20 n d. 20 p.46 n
Taking into account the definition of atomic number and atomic mass, the correct answer is option a.: an atom of calcium-46 has 20 p. and 26 n.
Subatomic particlesFirst of all, all atoms are made up of subatomic particles: protons and neutrons, which are part of their nucleus, and electrons, which revolve around them.
Definition of atomic numberThe atomic number, also known as nuclear charge, represents the number of protons inside its nucleus and is represented by the letter Z.
Definition of atomic massThe atomic mass (A) is obtained by adding the number of protons and neutrons in a given nucleus of a chemical element. That is, the mass number is the sum of the number of protons and the number of neutrons in the atomic nucleus:
Mass number = (number of protons) + (number of neutrons)
Protons ans neutrons in this caseThe atomic number provides the structure in which the elements are arranged on the periodic table. Therefore, it is possible to observe in the table that the atomic number of calcium is 20. Therefore, the number of protons of calcium is 20.
An atom of calcium-46 has a mass number of 46. Then, the number of netruons can be calculated as:
Mass number = (number of protons) + (number of neutrons)
46= 20 + number of neutrons
46 - 20= number of neutrons
26= number of neutrons
Then, the number of neutrons is 26.
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how to write an equilibrium constant expression
An equilibrium constant expression is a mathematical representation of a chemical reaction. It is expressed as the ratio of the product concentrations to the reactant concentrations, with each reactant or product placed in square brackets.
Equilibrium constant expression = [products]/[reactants]Steps to write an equilibrium constant expression:Start by writing out the chemical equation for the reaction that you want to create an equilibrium constant expression for. Make sure that all of the reactants and products are properly balanced. Place square brackets around each of the reactants and products in the equation. Divide the products by the reactants to create the equilibrium constant expression.For example, for the reaction A + B → C + D, the equilibrium constant expression would be written as [C][D]/[A][B]. The equilibrium constant expression can be used to calculate the degree to which the reaction is at equilibrium, which is important for predicting the behavior of the system.
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What are the abbreviations for a femtosecond, a gigaliter, and a decimeter, respectively? Enter the abbreviations, separated by commas.
The abbreviations of femtosecond is fs, gigaliter is GI and decimeter is dm.
In order to make them easier to write, the units for the metric system are frequently written as acronyms. The units listed below are abbreviated as follows:
The femtosecond is represented by the symbol fs, where 1 fs is equal to 1015 1015 of a second. A 1015 factor is denoted by the prefix femto-.
The gigaliter is referred to as Gl, and one Gl is equal to 109 109 liters. The prefix giga- denotes a 109 109 factor.
There are 10 decimeters (abbreviated as dm) for every meter, hence the name. 10 is denoted by the prefix deci-.
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4. Consider the following data: Metal Mass (9 Cu Specilic Heat_Wg % Temperature, 0,900 0.285 these two metals are placed in contact, which of the following will take place? Heat will flow from Al to Cu because Al has Heat will flow larger from specific heat. Cu to Al because Cu has Heat will flow from Cu Io larger heat capacity cause Cu is at a higher temperature. Heat will flow from Cu lo Al because Cu has No heat will Ilow In elther larger mass, direction Calculate the amount of heat liberated "C lo 11.8*C The specific heat (In kJ) from 262 of Cu Is 0.385 Jl 9 %C of copper when cools from 87.0oC to 11,8oC. The specific heat of Cu is 0.365 J/g oC
The heat will flow from copper to aluminum because Cu is at higher temperature. The heat liberated is -7.60kJ
When two metals at different temperatures are kept in contact, heat flows from hotter metal to colder metal until thermal equilibrium is reached.
Here Copper is at a temperature of 60 degree Celsius and aluminum is at 40 degree Celsius. Thus, heat will flow from Cu to Al.
In order to calculate the amount of heat liberated following calculations are required.
m1=262 g
T1=87 oC
Cp=0.385 J/g oC
T2=11.8 oC
The heat liberated can be expressed as follows:
Q=mCp(T2-T1)
Q=262 g*0.385 J/goC(11.8-87)oC
Q=-7585 J
=-7.60kJ
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Which is a reasonable Lewis structure for the BN ion? 2- 2 - 2- 2- [B~N:| [B==N:] [B==N:] #:B-=N:| D
[:B-=N:]2- is the correct lewis structure for BN ion.
How to draw Lewis structure?The diagrams known as Lewis structures often referred to as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures, depict the interactions between the atoms in a molecule as well as any lone pairs of electrons that may be present.
Find the total number of valence electrons as the first step.
Determine how many electrons are required to make the atoms "happy" in step two.
Choose a Central Atom in Step 4
Draw a skeletal structure in Step 5
Placing electrons around external atoms is step six.
Step 7_ Distribute the remaining electrons everywhere around the primary atom.
[:B-=N:]2- is correct lewis structure for BN ion
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how many grams of oxygen are required to react with 11.0 grams of octane ( c8h18 ) in the combustion of octane in gasoline?
The grams of oxygen that are required to react with 11.0 grams of octane is 38.6 grams.
The balanced chemical reaction can be depicted as follows:
C₈H₁₈ + 25/2 O₂ ------> 8CO₂ +9 H₂O
Atomic mass of C = 12 u
Atomic mass of H = 1 u
Atomic mass of O = 16 u
Molar mass of C₈H₁₈ = 8*12+18*1 = 96+18 = 114 g/mol .
Molar mass of O₂= 2*16 = 32 g/mol
Mass of C₈H₁₈ = 11 g
Moles = mass/molar mass
Moles of Octane = 11 g/ 114(g/mol) = 0.09649 mol .
From balanced chemical reaction :
1 mol Octane ------> 12.5 mol O₂
0.09649 mol octane -----> x
x = 0.09649 mol octane* 12.5 mol O₂/1 mol octane
x = 1.206 mol O₂
Moles of Oxygen = 1.206 mol
Mass of oxygen= moles of oxygen* molar mass of oxygen
Mass of oxygen= 1.206 mol * 32 (g/mol) = 38.59 g≅38.6 g
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To answer the questions; interpret the following Lewis diagram for NHF2 H- N~F 1. For the central nitrogen atom: The number of non-bonding electrons The number of bonding electrons The total number of electrons 2. The central nitrogen atom A. obeys the octet rule: B. has more than an octet: C.has less than an octet:
A single covalently bound molecule having N-F and N-H bondings is the NHF2 Lewis structure. The core molecule nitrogen shares three electrons with two fluorine atoms and one hydrogen atom to complete its octet.
What form does an NHF2 molecule take?Identify an NHF2 molecule's shape. Draw a drawing of it and specify the angles of its bonds. pyramidal with a 107 degree bond angle.
How is the Lewis structure determined?Finding the total amount of valence electrons is the first step. Step 2: Outline the molecule's skeletal structure. Step 3: Form each bond in the skeletal structure using two valence electrons. Step 4: Try to distribute the leftover valence electrons as nonbonding electrons in order to fill the atoms' octets.
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classify each compound as ionic or molecular
Answer:
A molecular compound is a molecule with covalent bonds between its atoms because they have a slight difference in electronegativity and more than half-filled valence shells. They tend to be molecules composed of nonmetals. On the other hand, ionic compounds are molecules with a nonmetal and a metal bonded by ionic bonds due to the difference between their electronegativities being significant. So, to determine if a compound is molecular or ionic, the type of elements in the compound and the difference between their electronegativities have to be considered.
3-Methyl-1-butene reacts with bromine under high temperature, 350 °C, to give 1- 7.(16) bromo-3-methyl-2-butene as the major product. Propose an acceptable mechanism that accounts for the formation of this product. Your answer must include each of the major steps of this chain reaction including the initiation and one of the terminations steps heat
3-methyl-1-butene is a terminal acetylenic compound that is but-1-yne substituted by a methyl group at position 3. It has a role as a metabolite. It is a terminal acetylenic compound and an alkyne. It derives from a hydride of a but-1-yne.
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when 2-bromo-2,3-dimethylbutane is heated with sodium methoxide, one major alkene is formed.
When sodium methoxide and 2-bromo-2-methylbutane combine in methanol, the anticipated main result is (C) 2-Methylbut-2-ene
In the first stage, 2-bromo-2-methylbutane dissociates, removing bromide, and forms 2-bromo-2-methylbutane by a carbocation.
C4C+H11 + Br = C5H11Br
Sodium methoxide then interacts with this carbocation. Two products will be produced by this reaction: 2-methyl-but-2-ene and 2-methyl-but-1-ene. The main product will be 2-methyl-but-2-ene among them. Methanol is utilized as a solvent in this process.
Na+ + C4C+H11 + C2H5O CH3-CCH3=CH-CH3 + CH2=CCH3-CH2-CH3
Therefore, 2-Methylbut-2-ene will result in a significant product from the reaction (C).
A image representing all of the question's possible answers is attached.
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for each of the following molecules, would you expect greater solubility in water or in hexane?
For the given molecules, toluene and isobutene would have greater solubility in hexane and sucrose and glycol would have greater solubility in water.
Solubility refers to the maximum amount of a substance that can be dissolved in a given amount of solvent at a specified temperature. Solubility is a characteristic property of a specific solute–solvent combination, and different substances have greatly differed solubilities. In other words, it is the ability of a substance - the solute, to combine and form a solution with another substance - the solvent. Polar solutes such as sucrose and glycol are more soluble in polar solvents (i.e., water), and nonpolar solutes such as toluene and isobutene are more soluble in nonpolar solvents (i.e., hexane).
Note: The question is incomplete as it is missing options which are A) toluene B) sucrose C) glycol D) isobutene.
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Why is Cl^− a Lewis base?
Cl− is a Lewis base because it donates a nonbonding electron pair.
What is a Lewis base?So any species with a filled orbital containing an electron pair that is not involved in bonding but has the potential to establish a dative bond with a Lewis acid to produce a Lewis adduct is considered a Lewis base. Because it can transfer its single pair of electrons, NH3 is a Lewis base. Trimethylborane (Me3B), which may receive a lone pair, is a Lewis acid. A dative bond is created in a Lewis adduct when the Lewis base and acid share an electron pair. A lone pair from NH3 will establish a dative bond with the vacant orbital of Me3B during a specific chemical reaction involving NH3 and Me3B to create the adduct NH3•BMe3.
Cl− is a Lewis base because it donates a nonbonding electron pair.
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why is it important not to dilute the initial sample before it has been loaded
Chromatography column in order to minimize the matrix effect and prevent detector saturation.
Why is using a little amount of solvent critical when loading a sample into a column of chromatography?It is imperative that you just use a few drops of solvent to load the sample in this situation if you choose to load the column wet. If you utilize too much solvent, the loading solvent will obstruct the elution and, as a result, the mixture's separation.
What impact does dilution have?Dilution has the following effects: I As a solution is diluted, its conductivity rises. When diluted, the specific conductivity drops (as the number of ions decreases w.r.t. to volume). With dilution, the equivalent and molar conductivities rise.
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Choose the combination of factors that would lead to the greatest oxygen unloading from hemoglobin. Low pH, high temperature, high Pcoz, high 2,3-BPG Low pH, high temperature, low Pcos, high 2,3-BPG High pH, low temperature, low Pcoz, low 2,3-BPG High pH, high temperature, high Pcoz, low 2,3-BPG Submit Request Answer rovide Feedback
Temperature, pH, PCO2, and 2,3 diphosphoglycerate are some of the variables that affect how oxygen binds to hemoglobin.
The oxygen dissociation curve moves to the right and Hb's affinity for O2 decreases as its temperature rises. The oxygen Hb dissociation curve changes to the right as the partial pressure of carbon dioxide rises, increasing the P50 value. As a result of greater Hb binding to carbon dioxide, Hb has a lower affinity for oxygen.
High pO2: The more oxygen there is in the air, the more effectively haemoglobin binds to oxygen.Low pCO2: Oxyhemoglobin production is reduced by a lot of carbon dioxide. Compared to oxygen, carbon dioxide has a stronger affinity for hemoglobin.Less H+: Hemoglobin is more likely to dissociate when the pH is lower or the hydrogen ion concentration is higher.Lower temperature: Hemoglobin and oxygen are more likely to bind at a normal temperature. The oxygen separation from haemoglobin is caused by the high temperature.To learn more about oxygen click here https://brainly.com/question/13370320
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what is beta radiation? responses the emission of electrons from the unstable nuclei of radioactive elements the emission of electrons from the unstable nuclei of radioactive elements the emission of electromagnetic radiation from the unstable nuclei of radioactive elements the emission of electromagnetic radiation from the unstable nuclei of radioactive elements the emission of two different types of particles from the unstable nuclei of radioactive elements the emission of two different types of particles from the unstable nuclei of radioactive elements the splitting of the unstable nucleus of an atom into two pieces of roughly equal size
A form of radiation called beta radiation is created when the radioactive elements' unstable nuclei release electrons.
An element is what?An essential element of a totality. In chemistry, a simple material is one that cannot be divided into smaller components or transformed into another substance. An element's fundamental building block is an atom, which is made up of protons, neutrons, and electrons. The number of protons in an element's atoms is constant.
What constitutes an element?A material that cannot be converted into another substance is an element. Every element is composed of a certain sort of atom! Elements having comparable chemical characteristics are arranged into columns in the periodic table, which is arranged in order of atomic number.
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initially a mixture contains 0.850 mol of n2 and o2 in an 8.00-l vessel. find the composition of the mixture when equilibrium is reached at 3900 degrees celsius. the equilibrium constant is 0.0123 at 3900 degrees celsius
The composition of mixture when equilibrium is reached is 0.0117M
The equilibrium composition of the mixture can be estimated if the equilibrium constant of a reaction and the concentration of the reactants at the reaction temperature are known.
The concentration of all species at equilibrium, which will not change further, is represented by the equilibrium composition.
The second law of thermodynamics, which stipulates that a closed system has maximum entropy, is used to calculate the composition of the equilibrium.
As soon as the reaction rates and temperature have stabilized adiabatically, the proportion of the reaction products is said to be in equilibrium. The equilibrium constant enables us to determine the reactant and product composition at equilibrium.
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how to find the oxidation state of mn(clo4)3
In this issue, an oxidation state of a molecule Mn (ClO4)3 must be determined. For oxygen, its charge is 2, while the overall value when taking into account its atom count is -24.
What is an example of the oxidation state?
Oxidation is the name for a chemical reaction in which electrons are moving. A substance is considered to be oxidized when it provides electrons. For instance, the interaction of oxygen and iron Rust is created when iron (Fe) and oxygen react because oxygen picks up electrons while iron loses them.
Which has the highest level of oxidation?
The elements with the highest oxidation states are tetroxides as ruthenium, osmium, xenon, hassium, etc. Osmium can oxidize to a maximum of +8. The maximal oxidation state is +8, which also applies to the other elements that make up the tetroxides.
Briefing:
Mn has a +3 charge.
To calculate Mn, we must acquire an overall charge of zero, therefore 3+3x-24=0, where x is the charge of Cl. Charge of Cl, x is +7.
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The volume of the milk included in a school lunch is 0.500 pints (1/2 pint). How many milliliters is this?
Answer:
236.588
Explanation:
Multiply the # of pints value by 473.2 to find milliliters.
what mechanism occurs in raynaud phenomenon that classifies it as a type iii hypersensitivity reaction?
The Raynaud phenomenon has a type iii hypersensitivity reaction mechanism in which immune complexes are deposited in tissues after antibodies bind to soluble antigens and are released into bodily fluids.
What Raynaud syndrome mechanism is categorized as a type iii hypersensitivity reaction?Immune complexes, which are lattices of antibodies and antigen, are formed when antibodies react to soluble antigen. Immune complexes (IgG or IgM), which are typically cleared by macrophages in the spleen or liver, become too numerous to be handled by these protective mechanisms.
Antigen-antibody aggregates known as "immune complexes," which are mediated by aberrant immunological responses in type III hypersensitivity reactions.
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How many electrons does a selenide ion (Se2- ) have?
Total Number of electrons that is present in selenide (se2-) ion is thirty six (36).
Selenium is a non-metal chemical element belonging to group sixteen(16) of the periodic table. This group is also called chalcogens. Along with selenium group sixteen also have sulfur, oxygen, tellurium, oxygen, polonium, livermium. Atomic number of selenium element is thirty four (34) , this means there are thirty four electrons and protons are there in a neutral element. Chemical symbol of selenium is se. Selenide (se2-) ion forms when a neutral selenium element accepts two electrons. Hence selenide (se2-) will have totally thirty six electrons. Since the number of electrons is two more than the proton charge is two negative charges.
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Although BH3 and CH2O have similar shapes, one is polar and the other is non-polar. Explain why.
BH3 has trigonal planer geometry with zero net dipole moment, hence it is non-polar.
Each B-H bond in BH3 is polar / forms a dipole because the B and H atoms have different electronegativities.
On the other hand, CH2O is having a similar structure but possesses dipole moment because of the presence of polar C=O group, thus the entire molecule is polar.
That is why despite the fact that both BH3 and CH2O have similar structure, but one is polar whereas other is non-polar.
The hydrogen side of the molecule will end up slightly positive. So that is why these two. That is why the first one is non polar because of the symmetry. And the second one is polar because it is a symmetrical it does not have that symmetry that we see in the first molecule.
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What are the steps in balancing a nuclear Equation?
Nuclear equations should be balanced due to the fact they should obey the regulation of conservation of mass and the regulation of conservation of price.
In a nuclear image including 21H , the 1 is the atomic wide variety — the wide variety of protons. It additionally represents the price, for the reason that price on a proton is +1Balancing of nuclear equation needs to be executed via way of means of equating the whole atomic wide variety in addition to the whole mass wide variety earlier than and after the response via way of means of following the legal guidelines of conservation of atomic wide variety and mass wide variety respectively in a nuclear response.
Using efficaciously balanced equations is critical whilst looking to recognize nuclear reactions. All equations want to be balanced to comply to 2 conservation legal guidelines: the mass wide variety is conserved, and the electric price is conserved.
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