Moist air at standard conditions is at a dry bulb temperature of 80°F and a relative humidity of 50%. It is cooled to 50°F. Use the psychrometric chart to determine:
a. The energy removed from the air after it is cooled, in Btu/lb of dry air
b. The energy removed from the air after it is cooled, in Btu/ft3 of dry air
c. The amount of moisture removed from the air after it is cooled, in lb/lb of dry air
d. The amount of moisture removed from the air after it is cooled, in lb/ ft3 of dry air