Calculate the least amount of work that must be done to freeze one gram of water at…

PHYSICS · Subjective · A Level · Physics · Engineering physics · Engineering physics

Problem

Calculate the least amount of work that must be done to freeze one gram of water at

0^\circ\text{C}

by means of a refrigerator. The temperature of the surroundings is

27^\circ\text{C}

. The latent heat of fusion is

L=80\text{ cal/g}