The specific volume of air is expressed as the volume of:
a. 1 kg of air at 101.325 kPa in cm3
b. 0.833 kg of air at standard pressure and temperature in m3
c. 1 kg of air at 101.325 kPa and 21 degrees Celsius in m3
d. 1 g of air occupied at any temperature and pressure
e. 1 kg of air, regardless of temperature and pressure
Answer: C