Physics 11 question help?

1. Mar 2, 2009

roxxyroxx

1. The problem statement, all variables and given/known data

A 3.0kg block of ice made in a fridge has an initial temp. of -5.0$$\circ$$C. It
is then moved to a much colder freezer. how much thermal energy is released by the ice as it cools to -40.0$$\circ$$C?
2. Relevant equations
EH = mc$$\Delta$$T
for water, c = 4186 J/kg/$$\circ$$C

3. The attempt at a solution
EH = mc$$\Delta$$T
EH = (3.0kg)(4186 J/kg/$$\circ$$C)(-40.0$$\circ$$C - -5.0$$\circ$$C)
= -439530 J
but the answer should be 2.2 x 10^5 J
help?

Last edited: Mar 2, 2009
2. Mar 2, 2009

LowlyPion

The specific heat of ice is different from that of water.