Question

Compressed air can be pumped underground into huge caverns as a form of energy storage. The volume of a cavern is 7.8 × 105 m3, and the pressure of the air in it is 8.6 × 106 Pa. Assume that air is a diatomic ideal gas whose internal energy U is given by Upper U equals StartFraction 5 Over 2 EndFraction n ⁢ Upper R ⁢ Upper T. If one home uses 30.0 kW h of energy per day, how many homes could this internal energy serve for one day?

Answer 1