What is the electrostatic force of repulsion for two protons separated by 75 pm.

Q: What is the difference in how a simple distillation is performed compared to how a fractional…

A: Distillation method is used to separate the liquid-liquid mixture, the liquid with lower boiling…

Q: Calculate the equilibrium concentration of carbon dioxide in fat given that the Henry's law constant…

A: Henry's law can be expressed as,                        C x KH = Pgas Where, C is the concentration…

Q: Why standardize the HCl before determination the NaOH normality.

A: Hydrochloric acid, HCl, is NOT suitable for use as a primary standard because although it is…

Q: The solubility of an ionic solid in water is quantified by this expression:   Ksp   Kc   Keq   Ka…

A:

Q: :The water of crystallization in NaCl. 4H2O is

A: The water of crystallization are the number of water molecules attached to a single formula unit of…

Q: What are the accepted values for the molar heats of solution for sodium bicarbonate and sodium…

A: Using appendix for the accepted values of molar heats of solution.

Q: Why does the water in swimming pool remain cold even until noon after cold night?

A: Water in swimming pools remains cool even during hot summer. This is because water has high…

Q: What are the units of Ion mobility?

A: The term ion mobility means that the speed achieved by an ion while migrating through a gas under a…

Q: Describe the general features of the Debye-Huckel theory of electrolyte solutions. Which…

A: Debye-Huckel theory: It is used to calculate the mean activity coefficients. The Debye-Huckel theory…

Q: Define constitutive

A: Constitutive property is the one which depend on the constitution or structural arrangement of atoms…

Q: In Part B of this experiment you added blue food dye to a mixture of water and cyclohexane and found…

A: The solubility depends on the polarity of the molecule. If molecule is polar, it will be dissolved…

Q: HPO3 HCO3

A: The question involves  conjugate acid base pair chemistry. a weak acid has a strong conjugate base…

Q: A 0.01 m solution of a weak electrolyte ionizes into 4 ions freezes at -0.062C. What is the apparent…

A: Solution is made up of two components which are solute and solvent. Solute is present in the minor…

Q: 4. A different hydrate of nickel(II) chloride, NiCl2 • XH2O, decomposes to produce 45.5% water.…

A: The formula of given hydrate is NiCl2.XH2O. On the decomposition of hydrate, 45.5% of water is…

Q: How much energy is required to vapourize 158 g of butane (C4H10) at its boiling point if its AvapH…

A: Given,  Mass of butane = 158 g  Molar mass of butane = 58.12 g ∆Hvap = 24.3 KJ/mol

Q: Reflux is the process of heating a reaction mixture and condensing the solvent vapors back into the…

A: Boiling is the rapid vaporisation of a liquid that happens when it is heated to its boiling point,…

Q: A 23.54-mg sample of unknown compound E produced 44.09 mg of AgCl when analyzed by the sodium fusion…

A: Fusion of an organic compound with sodium leads to ionization of groups present in it. These groups…

Q: Define the following terms.  End point

A: The end point describes the equivalence point of the titration.

Q: The addition of salt to water decreases the chemical potential of the water.

A: The statement is True. The decrease in chemical potential occurs because the concentration of water…

Q: Identify and justify the approximations made in the derivation of the van 't Hoff equation.

A:

Q: Extracellular Intracellular Nernst potential (370C, mV) lon Concentration (mM) Concentration (mM)…

A: [Na+]outside =165 mM [Na+]inside =15 mM [K+]outside =16 mM [K+]inside = 220 mM Temperature, T = 37°C…

Q: Determine the enthalpy of neutralization in Joules/mmol for a solution resulting from 20 mL of 0.9 M…

A: Given: Concentration of HCl = 0.9 M Concentration of NaOH = 0.9 M Volume of NaOH solution added = 20…

Q: When solid ammonium nitrate, NH4NO3, dissolves in water the solution becomes extremely cold— hence…

A: The heat energy needed to break up 1 mole of crystal lattice is the lattice dissociation enthalpy.…

Q: In the process of distillation of a mixture of acetone and water, how does the composition of the…

A: Given: Mixture of acetone and water  To Find: which will be distilled first in the mixture.…

Q: Which of the following refers to a composition in which its components cannot be separated by…

A: Distillation :- It is a method of separation of mixture of liquids based on their difference in…

Q: Does the zeta potential of colloidal particles depends on pOH

A: Zeta potential is a potential difference between dispersion medium and layer of fluid (stationary…

Q: Explain how osmotic pressure measurements can be used to determine the molar mass of a polymer.

A: The properties that depend on the number of solute particles are called colligative properties. When…

Q: At room temperature, the equation for Gibbs free energy change of an uncharged solute moving into…

A: The Gibbs free energy equation for the uncharged solute moving into the cell is- ∆G=1.4…

Q: Explain the difference of the distillation curves between simple distillation and fractional…

A: Simple distillation is the technique which is used to separate the components presents in a liquid…

Q: Consider the explanation in the Introduction regarding the determination of qrxn, and answer the…

A: A) Given: The temperature of HCl solution increases.

Q: For which substance (out of KIO3 and Na2S2O3), a standard solution can be prepared? Justify your…

A: Redox reactions involving iodine molecule and starch as indicator are designated as "iodometric…

Q: calculate The 6H cancentratian of a 6H-cancentratian wom solution wiith concentratian of li44 x10:3…

A: H+ concentration of the solution is 1.44*10-3 M.

Q: Explain and sketch the Born-Mayer equation to determine the crystallization energy of NaCl and MgCl2

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Q: What is the gravitational force of attraction for two protons  separated by 75 pm?

A: The gravitational force of attraction for two protons separated by 75 pm is to be calculated.

Q: Determine the enthalpy of neutralization in Joules/mmol for a solution resulting from 19 mL of 0.9 M…

A:

Q: Does the entropy of the system increase, decrease, or stay the same when a solid sublimes?

A: Entropy is the measure of randomness. When the randomness increase entropy increases.

Q: Qalculate The 6H "cancentratian of a solution with 本十 cancentratian of 1,44 x103 m

A: Welcome to bartleby !  Introduction :  We have to calculate concentration of [OH-]

Q: 3.12 The standard molar entropies of water ice, liquid, and vapor are 37.99, 69.91, and 188.83 J K-'…

A: When there is study of different phases of a component, it will come under the study of phase…

Q: Is the value of K greater than I or less than I ? Explain using the equation involving K and Delta…

A: The relationship between K and ∆G can be given by the following equation:

Q: What molaity of pentane is obtained by dissolving 5g pentane, C5H12, in 245 g hexane C6H12

A: The number of moles of pentane is calculated as,

Q: Which statement best describes the differences in the melting temperatures (Tm) of CaO and MgO?

A: Tm(MgO)>Tm(CaO): Stronger ionic forces due to smaller distance between the ions (size) This is…

Q: Which is more efficient for separating the components of a liquid mixture of a liquid mixture,…

A: Which is more efficient for separating the components of a liquid mixture of a liquid mixture,…

Q: in fractional distillation, how do you tell which liquid is in which fraction and which fraction has…

A: FRACTIONAL DISTILLATION is a separation technique in which two or more miscible liquids or gases are…

Q: What is the value of Ke in boiling water? a) Ke > 1 c) K. << 1 d) Ke = 1

A: The equilibrium constant Kc is the ratio of the equilibrium concentrations of products over the…

Q: normality

A:

Q: Indicate the principal type of solute-solvent interaction in each of the following solutions and…

A: