Kenny Rogers wants to freeze some milk His milk is at freezi

Kenny Rogers wants to freeze some milk. His milk is at freezing temperature and the latent heat of fusion of the milk is L_f = 4000J/kg. He finds that he has to remove 20.000J of heat to completely freeze all the milk. What is the mass of the milk? 3 kg 1 kg 5 kg 2 kg 4 kg

Solution

Q = mL

=> 20000 = m*4000

=? m = 5 kg