To raise the water temperature of 200g from 30 ° C to 60 ° C, a volume must be provided. Heat 25200).
1. Calculate the heat capacity of this 200g water:
2. What is the heat capacity if the mass of water is _2kg?

The air in an automobile tire with a volume of 2.60 ft3 is at 70°f and 21 psig. determine the amount of air that must be added to raise the pressure to the recommended value of 30 psig. assume the atmospheric pressure to be 14.6 psia and the temperature and the volume to remain constant. the gas constant of air is ru = 53.34ft⋅lbflbm⋅r(1 psia144 lbf/ft2) = 0.3704 psia⋅ft3lbm⋅r the amount of air that must be added to raise the pressure is lbm