1. Natural gas (methane) is burned with stoichiometric air with reactants supplied at the reference conditions P0, T0 in a steady-flow burner. The products come out at 1400 R. If the burner should deliver 10 Btu/s, what is the needed flow rate of natural gas in lbm/s?
2. What is the higher heating value, HHV, of nbutane?
3. Find the enthalpy of combustion and the heating value for pure carbon.