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Which of the following factors influence the enthalpy change associated with the formation of a solution (ΔHsoln) for a non-electrolyte?
i. The strength of the intramolecular forces of the solute
ii. The strength of the intermolecular forces between the solute and solvent
iii. The strength of the intermolecular forces between solute molecules
iv. The strength of the intermolecular forces between solvent molecules
v. The strength of the intramolecular forces of the solvent molecules.
a. i only
b. i and v
c. iii and iv
d. ii, iii, and iv
e. i, ii, iii, iv, and v
The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 6.63-g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that..
Briefly explain the geometry (hybridization) of an amide nitrogen, and resonance explanation for the conformational stability of the amide
A gas is confined to a container with a massless piston at the top.A massless wire is attached to the piston. When an external pressure of 2.00 rm atm is applied to the wire, the gas compresses from 5.90 to 2.95 L. When the external pressure is in..
An acre of corn can produce about 375 gallons of ethanol, using only the kernel of the corn for conversion to ethanol. Assume the energy input to produce an acre of corn is 15000000 kJ.
An iron bar of mass 885 g cools from 94°C to 5°C. Calculate the heat released (in kilojoules) by metal.
Calculate the number of Rb-87 atoms in a 10.60 g sample of the naturally occurring isotope. b. A major line in the emission spectrum of rubidium has an energy value of 2.88X10-19 J. Calculate the wavelength, in nanometers, of light that correspond..
But a3.00 g sample of Mg dissolves in nitric acid to give 18.3 g of magnesium nitrate, which gives 4.98 g of MgO when heated to 1000 degrees Celsius. These results illustrate which law, theory or hypothesis?
While traveling at this rate of speed, what is the kinetic energy of this vehicle in kilojoules?
A 20 mg sample of a compound is dissolved in 5.0 ml of water and extracted with 2.5 mL of heptane. After separation of the layers, the heptane layer is found to contain 15 mg of the compound. What is the partition coefficient of the compound, Khep..
Predict the products of their eliminations, and explain the large difference in the ease of elimination.
Write the structures (or name the structures) for the major monobromination products that would be formed from each of the following substrates used. Explain your predictions.
Because of the relationship between structure and color would you anticipate the 2, 4-DNP derivative of an aldehyde or ketone conjugated with an aromatic ring or double bond to be yellow or red-orange
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