Enthalpy of formation

Question

Assignment:

Many power plants produce energy by burning carbon-based fuels, which also produces carbon dioxide.  Carbon dioxide is a greenhouse gas, so over-production can have negative effects on the environment.

Use enthalpy of formation data to calculate the number of moles of CO₂ (g) produced per megajoule of heat released from the combustion of each fuel under standard conditions (1 atm and 25 °C).

(a) coal, C(s, graphite);
__________ mol MJ ^-1

(b) natural gas, CH4(g);
__________ mol MJ ^-1

(c) propane, C3H8(g);
__________ mol MJ ^-1

(d) octane, C_8 H_18 (l)(?H_f°= -250.1 kj mole^(-1) ).
__________ mol MJ ^-1

Provide complete and step by step solution for the question and show calculations and use formulas.