Question

How much water remains unfrozen after 52.8 kJ is transferred as heat from 326 g of liquid water initially at its freezing point? The latent heat of fusion is 333 kJ/kg. Number Units

Answer 1

solution : Given; Heat (Q) = 52.8 K J = 52.8810 J. The latent heat of fussion (2) = 3 3 3 KI/ng = 333 x 103 Thug We have, Q = Lm where on is the amount of water that is mass of water.. Thereforce ma a 52.88 10 J = 333*103 Ing = 0.158 ng So the amount of water (m') which renains unfrozen will be, m' = 326 gon - 0.158 ng = 326 4103ng - 0.158ng -0.326kg - 0.158kg

m' bei Therefore the amount of water which rreonains unfrozen u be 0.168kg