The equation for the combustion of CH4 (the main component of natural gas) is shown below....

Question

Question

The equation for the combustion of CH4 (the main component of natural gas) is shown below.

How much heat is produced by the complete combustion of 289 g of CH4?
CH4(g)+2O2(g)→CO2(g)+2H2O(g)ΔH∘rxn=−802.3kJ

Answer 1

Answer #1

Number of moles of CH4 = 289 g / 16.04 g/mol = 18.0 mol

From the balanced equation we can say that

1 mole of CH4 produces 802.3 kJ of heat so

18.0 mole of CH4 will produce

= 18.0 mole of CH4 *(802.3 kJ of heat / 1 mole of CH4)

= 14441 kJ of heat

Therefore, the heat produced by 289 g of CH4 is 14441 kJ

Answer 2

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