Final answer:
The combustion of one mole of methane releases 802.3 kilojoules, and when converted to kilocalories, it is approximately 191.79 kcal, which corresponds to 1.92 × 10^2 kcal.
Step-by-step explanation:
The combustion of one mole of methane releases energy which can be measured in different units, such as kilojoules (kJ) or kilocalories (kcal). To convert the energy from kilojoules to kilocalories, we use the conversion factor where 1 kcal = 4.184 kJ. Given that the combustion of one mole of methane releases 802.3 kilojoules of energy, the conversion to kilocalories would be:802.3 kJ × (1 kcal/4.184 kJ) = 191.79 kcal.Therefore, the correct answer that represents the energy released by the combustion of one mole of methane in kilocalories is B. 1.92 × 102 kcal.