Answer to Question #55972 in General Chemistry for tracy guido
Delta H of fusion for water is 333 J/g.
My question is I got a negative for q. Would this change to a positive because you need heat to melt the ice? I no you can't have a negative. So i am not sure if it should be a neg or a positive
q = m x specific heat x (Tfinal - Tinitial)
specific heat of water is 4.186 ( should memorize or on a chart)
q= 100g x 4.186J x ( 0 -55) = -23,023 J
mass ice x heat of fusion
q= m x Hfusion
-23,023J = m X 333 J/g = 69.12g
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