Homework Help: Chemistry

Posted by Jeff on Sunday, September 7, 2008 at 2:04pm.

Consider a 27.5 g piece of ice at 0.00 C.

a) how much heat is required to convert the ice to water that is also 0.00 C?

b) how much heat would be required to warm this water from 0.00 C to 17.50 C?

HELP!!

I think the fusion is 333 J/g at 0 C... But I'm not sure what to do with that.

Chemistry - bobpursley, Sunday, September 7, 2008 at 2:17pm
Heat to melt=Hf*mass
Heat to raisetemp=specificheat*changeTemp*mass

Memorize those.
Chemistry - Jeff, Sunday, September 7, 2008 at 3:26pm
is Hf triangleH'f?? and if so would the value be -285.83?

for b, would we want the specific heat of h2o (l) or (s)?

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