Joan prepares a glass of iced milk tea. Firstly, she puts some ice cubes at -10 ?C into a glass. Then she adds 0.15 kg of tea at 85 ?C and 50 g of fresh milk at 4 ?C into the glass. If all the ice just melts after all the ingredients mix together, how much ice does Joan put into the glass initially?

3. Joan prepares a glass of iced milk tea. Firstly, she puts some ice cubes at 10 CC into a glass. Then she adds 0.15 kg of tea at 85 C and 50 g of fresh milk at 4 C into the glass. If all the ice just melts after all the ingredients mix together, how much ice does Joan put into the glass initially? (5) Given: specic heat capacity of ice = 2050 J kg'1 "C1 specic heat capacity of tea = 4200 J kg'1 "C1 specic heat capacity of fresh milk : 3900 J kg'l Go1 latent heat of fusion ofice : 3.34 x 105 J kg'1