Homework Help: chemistry

Posted by brittney on Wednesday, May 18, 2011 at 4:11pm.

i do not understand how to do these and i have a question on my test tomorrow on this stuff can someone explain to me how to do this?
for each of the following molecules draw the lewis structure, determine the shape, determine the polarity, and determine the kinds of intermolecular forces that are present PO4-3, HBr, CH3OH, CO2, NO2-1

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