The heat of vaporization of ethyl alcohol is about 200 cal/g.If 2.4 kg of this fluid were allowed to vaporize in a refrigerator, find what mass of ice would be formed from 0 degree C water.

Answer 1

200 cal/g * 1000g/kg * 2.4kg = 480000 cal

The latent heat required to turn 0C water to 0C ice is 80cal/g

480000 / 80 = 6000g or 6.0kg

Answer 2

for the first equation, where do you get the 1000 g/kg from?

Answer 3

1000 grams per 1 Kilogram, just a way to get correct units