A calorimeter contains a gram of water, which is X centigrade.  Then put b grams of ice into the calorimeter where the temperature is -20 C. If the ratio of a and b is 2: 1 and the equilibrium temperature is 50C, what is the X value.  ces = 0.5 cal / gr 0C, liquid = 1 cal / gr 0C, Les = 80 cal / gr and heat capacity calorimeter = 66 cal / 0C