Excess ice at 0°C is placed in an insulated cup containing 361 g of soft drink at 23°C. The specific heat of the drink is the same as that of water (4.184 J/g°C). Some ice remains after the drink cools to 0°C. Determine the mass of ice that has melted. Assume that the heat capacity of the cup can be ignored. It takes 334 J to melt 1.00 g of ice at 0°C.
Consider the ice as the system and the water as the surroundings or vice versa. Either way, realize that the heat is being transferred from the soft drink (source of thermal energy) to the ice (the sink of thermal energy).