Problem: What mass of natural gas (CH4) must you burn to emit 268 kJ of heat?CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g)             Hrxno= –802.3 kJ/mol

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We are asked what mass of natural gas (CH4) must you burn to emit 268 kJ of heat.


We'll use the thermochemical equation to calculate the mass of CH4.

Molar mass CH4 = 16.05 g/mol


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Problem Details

What mass of natural gas (CH4) must you burn to emit 268 kJ of heat?

CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(g)             Hrxno= –802.3 kJ/mol



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Our tutors have indicated that to solve this problem you will need to apply the Thermochemical Equations concept. You can view video lessons to learn Thermochemical Equations. Or if you need more Thermochemical Equations practice, you can also practice Thermochemical Equations practice problems.

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