Homework Help: chemistry

Posted by Aidan on Thursday, June 16, 2011 at 8:01pm.

Calculate the quantity of heat gained or lost:
a) 3.50 mol H2O freezes at 0.0 oC
b) 0.44 mol of steam condenses at 100 oC

chemistry - DrBob222, Thursday, June 16, 2011 at 11:21pm
a.
3.50 x molar mass = grams H2O.
q = grams H2O x heat fusion.

b.
0.44 moles H2O x molar mass = ?? grams steam.
q = mass steam x heat vaporization.

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