Homework 2_SP_2011

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)
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Homework 2_SP_2011 - CHEM 112 SP2011 HMWK 2 Name_ Due...

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