prequiz.122 - REMOVED from 40.0 g of water at an initial...

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Dr. Zellmer Chemistry 122 Wednesday Time: 18 mins Summer Quarter 2008 June 18, 2008 Pre-quiz Name Rec. Instr. ---------------------------------------------------------------------------------------------------------------------------------------- Show ALL your work to receive full credit. R = 0.08206 L C atm/mol C K = 8.314 J/mol C K 1. (7 pts) The amount of lead, Pb, in the air on a particular day is 2.56 x 10 ! 9 kg/m 3 ? What is this in lb/ft 3 ? (1.000 lb = 453.6 g) (Use dimensional analysis to do the problem .) 2. (8 pts) A quantity of heat equal to 600.0 cal is
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Unformatted text preview: REMOVED from 40.0 g of water at an initial temperature of 45.0 o C. Calculate the FINAL temperature (in o C). (The specific heat of water is 1.00 cal/g C C) Show your work . OVER . .. 3. (13 pts) Draw the Lewis structure of CH 2 Cl 2 and answer the following questions. Must show work . a) Lewis structure of CH 2 Cl 2 b) What is the shape of this molecule? c) Is the molecule polar or nonpolar? 4. (2 pts) Correctly name the following compounds. Also , are they ionic or molecular? Ca(NO 3 ) 2 N 2 O 5...
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prequiz.122 - REMOVED from 40.0 g of water at an initial...

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