a) You have a styrofoam container with 815 g of a soft drink (specific heat of 4,100 J/(kg °C)) at 29.0° and you add a 60 g chunk of ice at 0°C. Assume the liquid and water mix uniformly as the ice melts and determine the final temperature of the mixture (in °C). 375.31 X Since the mixture is thermally isolated, the heat gained by the ice and the associated ice water is equal to the heat lost by the liquid. Write expressions for the heat gained by the ice as it changes from a solid to a liquid, gained by the ice water as it warms to the final temperature, and lost by the liquid as it cools to the final temperature. °C b) What If? What is the minimum mass of the ice cube (in g) that will result in a final mixture at exactly 0°C? 290.1 9

A chunk of metal has a mass of 600g and has been in boiling water for several minutes. It is quickly dropped into an insulating Styrofoam beaker containing 1.20 kg of water at room temperature (20.0°C). After waiting few minutes, you observe that the water's temperature has reached a constant value of 23.0 °C. The specific heat of water is 4190 J/(kgK). a)  Assuming that the Styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specific heat of the metal? b)  If the heat absorbed by the Styrofoam actually is not negligible, what would be the specific heat of the metal? A)Greater than the one calculated in part (a). B)Smaller than the one calculated in part (a). C)Same as the one calculated in part (a).

B1