6 simple multiple choice problems, no answer explanations required

I have attached the problem set as a word document. No justification is required, I just need to verify that my answers are in fact correct! Thanks! Just to give you an idea of the nature of the assignment, the first question is: 1.On a relative basis, the weaker the intermolecular forces in a substance: A. The greater the heat of vaporization B. The more it deviates from ideal gas behavior C. The greater its vapor pressure at a particular temperature. D. The higher its melting point E. none of the above

4 Acid/Base chemistry problems

1. Solve the following problem related to the solubility of equilibria of some metal hydroxides in aqueous solution. a) The solubility of Cu(OH)2 (solid)is 1.72x10^-6 gram per 100 ml of solution at 25 degrees C. i. Write the balanced chemical equation for the dissociation of Cu(OH)2 (solid) in aqueous solution. ii. Calculate the solubility (in moles/liter) if Cu(OH) 2 at 25 degrees C. iii. Calculate the value of the solubility-product constant Ksp for Cu(OH)2 at 25 degrees C. b) The value of the solubility product constant, Ksp, for Zn(OH) 2 is 7.7x10^-17 at 25 degrees C. i. Calculate the solubility of Zn(OH)2 at 25 degrees C in a solution with a pH of 9.35 ii. At 25 degrees C,... click for more

Problems with the Unit Cell.

I am having trouble drawing the unit cell and labeling the symmetry elements.

Trouble calculating distances between tetrahedral sites in cubic cell.

I am having trouble with the whole problem. Calculating the distance between tetrahedral sites and drawing the unit cell and whether the tetrahedra share vertices, edges or faces. The actual problem is attached.

Can not calculate Z and densities.

Need help calculating z and densities of K2O (regular) and K2O with K filling all tetrahedral sites of hcp. Problem is attached.