Natural gas, or methane, is an important fuel. Combustion of one mole of methane releases 802.3 kJ of energy. How much energy does that represent in kcal? (1 cal = 4.184 J)

Question

Quizplus · Accepted Answer

To convert kJ to kcal, use the conversion factor: 1 cal = 4.184 J. First, convert kJ to J: 802.3 kJ = 802,300 J. Then, convert J to cal: 802,300 J / 4.184 J/cal = 191,800 cal. Finally, convert cal to kcal: 191,800 cal / 1,000 = 191.8 kcal, which is approximately 1.92 × 10² kcal.

Natural Gas, or Methane, Is an Important Fuel