I 12 10 points which intermolecular forces will

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I 12. (10 points) Which intermolecular forces will dominate interactionsof the following - . molecules andions? . ca2+ and 52- , iw-,- (lbr-h> CC4 and C2Q V b b i (&errrh DT ;iiA*da J-;+/t;-dx& A ~ ) Na+ and NH3 t~ - AP& [email protected] and SO;! A:pR - kp& Li+ and N2 x 1% - LdMCJ A'&' ?
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For questions 7 and 8, refer to the phase diagram to the right. 7. The point denoted by X represents: 4 a. a liquid at equil:ibrium with a sblid b. a gas at equilibrium with a solid c. a solid F d. a liquid 1 U) 'ID e -a gas 0 L Q 8. The point denoted by Y represents: I @ a $iqui:d..ai equilibrium with:+sqfid .. I a. gas temperature * d. a liquid e. a solid 9. Under ideal conditions, the van't Hoff factor for the soluble salt m(S04)2 is: 10.. When a non-volatile solute is added to a volatile sol'vent, the freezing point - - . , the'boiling point , the osmotic pressure across a . . semipermeable membrane , and the solution vapor pressure I 6 decneases, inoie~es; in.creases,, decrease,: 11. 1 mol of a non-volatile solid is dissblved in 162 g water. If the vapor pressure of water at the same temperature is 0.030 atm, the vapor pressure of the solution is: %sa~\/, Pz,g. @ 0.027 arm b. 0.003 atm c. 0.015 atm d. 0.031 atm e. 0.033 atm 12. Which one of the following compounds forms hydrogen bonds in the liquid state? 13. The vapor pressure df liquid water is 17.5 torr at 20 O C and 176 torr at 80 OC. What. is,the enthalpy of vaporization of liquid water in kJ rnoY1?
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3 Select either question (a) or (b). DO NOT DO BOTH. a) How many liters of ethylene glycol antifreeze C2&02, would you add to your car radiator containing 7.0 L of water if you wanted to protect your engine to -1 0 OC? (16 pts) density (ethylene glycol) = is 1.1 g/rnL, density (H20) = 1.0 g/mL, b) Copper adopts the fcc unit cell. Calculate the expected density of copper in g/cm3 (16 pts) a = 0.362nm r Cc &r &&, -
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