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August 29, 2014

Homework Help: chemistry

Posted by Joshua on Monday, October 27, 2008 at 6:52pm.

is this the right anser? for this problem please let me know thanks

calculate the amount of heat in kilojoules released when 50 grams of steam at 125 C are converted to 50 grams of ice at -125 C

so

50 grams of H2O
Ti= 124 C
Tf= -125 C
q=? J=?

q=m *Cp * At

J= 50g * 4.184J/g C= (-125 C - 125 C) =2.1 x 10^2 j

is this the right? please let me know thanks

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