Frankie has decided to make a special drink for her friend Rosie. Frankie starts by pulling 40.0 g of

ice at an initial temperature of 28.4 F out of the freezer. She places the ice in a 300.0 g glass cup that

has been cooled to 275.15 K. Frankie then pours 100.0 g of special yummy liquid at an initial

temperature of 21.0C into the cup. All of the ice melts by the time the cup, ice, liquid end up at a

thermal equilibrium. Assume a closed system so that no energy or mass is lost to the environment.

(cice = 0.5 cal/gC, Lfice = 80.0 cal/g, cglass = 0.16 cal/gC, cliquid = 2.46 cal/gC)

a) What is the final temperature of the system? (+6.0 points)

b) How much additional mass of ice would have had to be added to the cup to have the system reach a final temperature of 3.0 C ? Assume all the ice will melt. (+4.0 points)