What mass of natural gas (ch4) must you burn to emit 272 kj of heat?

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01-07-2017
Chemistry

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What mass of natural gas (ch4) must you burn to emit 272 kj of heat?

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CarlsenP CarlsenP · Answer 1 · 2017-07-01T14:57:42+02:00

CarlsenP CarlsenP

01-07-2017

CH4 + 2 O2 ---> CO2 + 2 H2O Q = 891,6 kJ / mol CH4

1 mol CH4 = 16 g

16 g ---- 891,6 kJ
x g ----- 272 kJ

x = 272 kJ × 16 g / 891,6 kJ = 4,88 g

You must burn 4,88 g of CH4.

:-) ;-)

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