Homework 2_SP_2011 - CHEM 112 SP2011 HMWK 2 Name Due Wednesday Feb 9 by 5 pm Answer key will be posted to BB at 5 pm No late papers will be accepted 10

Homework 2_SP_2011 - CHEM 112 SP2011 HMWK 2 Name Due...

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CHEM 112 SP 2011 HMWK 2 Name _________________________ Due Wednesday Feb. 9 by 5 pm Answer key will be posted to BB at 5 pm. No late papers will be accepted. 10 points total. S HOW ALL WORK . 1. (1 pt) Compute the solubility of O 2 in a pond at 0.00 o C, and a measured O 2 partial pressure of 140. mm Hg. The Henry’s law constant for this temperature is 1.66 x 10 - 6 M/mm Hg. Solubility = (show units) 2. The normal freezing point of benzene is +5.5 o C. The freezing point depression constant, k f , for this solvent is - 5.12 o C/m. A solution is prepared by dissolving 55.0 g naphthalene (non-ionizing molecule, molar mass = 128.17 g/mol) in 85.0 g benzene. What will the freezing point be, for this solution? T, freexing point = 3. Metals are conductive, malleable, ductile and lustrous. These properties are all explained by the fact that: (circle all that apply) a) the valence band is partially filled and the band gap is large. b) the metal atoms form ionic bonds with each other. c) the metal atoms form covalent bonds with each other.
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