Asked: November 8, 20202020-11-08T20:51:07+00:00 2020-11-08T20:51:07+00:00 what mass of natural gas (ch4) must you burn to emit 276 KJ of heat? cameron 142 Questions 1 Answer 1 Best Answer 0 Points View Profile cameron Hi..what mass of natural gas (ch4) must you burn to emit 276 KJ of heat? natural gas 1 Answer Voted Oldest Recent alice 0 Questions 136 Answers 136 Best Answers 136 Points View Profile Best Answer alice 2020-11-08T21:12:45+00:00Added an answer on November 8, 2020 at 9:12 pm From the chemical equation, we can observe that one mole of methane yields 802.3 Kj. But our requirement is to yield 276 kJ = 276 kJ / 802.3 kJ= 0.34401 moles of methane are needed Kilojoules are converted into moles of methane by utilizing enthalpy of reaction as a conversion factor. The molar mass of methane is then used to convert moles to grams. So, mass = molar mass x moles = 16.042 g/mol x 0.34401moles = 5.51g 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerLeave an answerCancel reply Attachment Select file Browse Featured image Select file Browse Save my name, email, and website in this browser for the next time I comment.