Calculate combustion air required flowrate, in Sm3/hr and kg/hr, according to the following reaction, including 20% excess air. Also calculate the mass flowrate of pentane in kg/hr.

C_5 H_12 + O_2 CO_2 + H_2 O

Pentane flowrate = 3,000 Sm3/hr, MW = 72.15. Assume that there is 21% (volume or molar) oxygen in air. MW of O2 = 32.00, air = 28.9625. Note: 1 kg-mol 23.64 Sm3 at 101.325 kPa and 15 C (Standard Conditions)