A 0.3-L glass of water at 20oC is to be cooled with ice to 5oC. Determine how much ice needs to be added to the water, in grams, if the ice is at
(a) 0oC and
(b) 220oC. Also determine how much water would be needed if the cooling is to be done with cold water at 0oC. The melting temperature and the heat of fusion of ice at atmospheric pressure are 0oC and 333.7 kJ/kg, respectively, and the density of water is 1 kg/L.