During a chemistry lab, you take a 0.2 kg sample of ice and put it in a beaker with a thermometer. You then place the beaker with the ice on a hot plate, and turn on the hot plate. This hot plate adds heat to the ice at a rate of 540 W. At time t = 0 the temperature of the ice is -32C. Because of the large heat capacity of water and ice, you may assume in this problem that all the heat goes into the sample of ice, and that we can ignore the amount of heat going into the beaker and thermometer. Also assume no heat escapes from the system. Some useful values: Specific heat of water: 4200 J/(kg K) Specific heat of ice: 2100 J/(kg K) Latent heat of fusion: 334000 J/kg 1a) At what time does the ice reach a temperature of -19C? answer = units? Check your answer not yet solved Show solution 1b) At what time has all the ice melted? answer = units? Check your answer not yet solved Show solution 1c) After the ice has completely melted, we're left with 0.2 kg of water. At what time does the water reach a temperature of 57C? answer = units? Check your answer not yet solved Show solution A tank is filled with 0.7 kg of water at 11C. We then add a 0.6 kg block of copper at 79C. 2a) What will be the final temperature of the water? Note that the specific heat of water is Cw K). Assume no heat escapes from the tank. = 4200 J/(kg K), and that of copper is c = 390 J/(kg