Question

A 20.0 kg block of ice is sitting in a cooler. The temperature of the ice is 0.0_C when it is put into the cooler. As it melts, how much heat does the block of ice absorb?

a.
8.68 X 10^4 J
c.
2.36 X 10^4 J
b.
6.68 X 10^6 J
d.
3.68 X 10^6 J

Answer 1

The heat that ice will need to melt at 0 °C is equivalent to the latent heat of fusion of water, which has a value of 334 Joules per gram.
Grams of water = 20 x 1000
H = ml; where H is the heat, m is the mass of water, l is the latent heat of fusion of water.
H = 20000 x 334
= 6.68 x 10⁶ Joules
The answer is C