A parking lot in Los Angeles receives an average of 2.6 × 10⁷ J/m² of solar energy per day in the summer.
(a) If the parking lot is 325 m long and 50.0 m wide, what is the total quantity of energy striking the area per day?
(b) What mass of coal would have to be burned to supply the quantity of energy calculated in (a)? (Assume the enthalpy of combustion of coal is 33 kJ/g.)