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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
a chemistry student has made some stock 0.2 moll potassium permanganate solution. he wants to make 800 ml of 0.04 moll
The energies of these spin states are E down=hyB/2 and E up=-hyB/2, where y=26.8*10^7 (Telsa sec)-1. Explain what are the probabilities p up and p down of observing the proton in it's up and down states
Bond length is the distance between the centers of two bonded atoms. On the potential energy curve, the bond length is the internuclear distance between the two atoms when the potential energy of the system reaches its lowest value.
Question- 6 M NH3, a basic solution, cannot be found on the reagent shelf, but 6 M NaOH, also a base, is available. What would be observed if the 6 M NaOH is substituted for the 6 M NH3 in testing the reference solution? This is for the test for C..
The mass of a 0.106 mol of a compound is 6.366 g. What is the molar mass of this compound to three significant figures
an electron is confined to a linear region with a length of the same orderas the diameter of an atom (about 100 pm)
A geotechnical engineer is evaluating the stability of the slope in Figure 13.4 below. This evaluation is considering the potential for a shear failure along the shear surface shown. The soil has drained friction angle of 30 degrees and no cohesion..
Problem- If the enthalpies of formation of carbon dioxide and water are -393.509 kJ/mol and -285.83 kJ/mol respectively, what is the enthalpy of formatino of C10H8(s) in kJ/mol
Calculate the pH of the solution at the equivalence point. b) What volume of 0.05 M HCl solution should be added to the sodium glutamate solution to yield a pH of 4.5?
Carbon dioxide dissolves in water to form carbonic acid. Estimate the thermodynamic equilibrium constanst (K) for this reaction (delta Gf values: H2CO3= - 616.1, H2O= - 237.1, CO2= - 394.4) .
Electron Configurations of Atoms and Ions The electron configuration of an atom tells us how many electrons are in each orbital. For example, helium has two electrons in the 1s orbital. Therefore the electron configuration of He is 1s^2. Part A Wh..
in the titration of 50.0 ml of 1.0 m methylamine ch3nh2 kb 4.4 10-4 with 0.50 m hcl calculate the ph under the
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