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what is the mass in kg of CO2 formed by combusting enough fuel to release 1.0...

what is the mass in kg of CO2 formed by combusting enough fuel to release 1.0 kJ of energy for this equation?

CH4 + 2O2 -> CO2 + 2H2O

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Answer #1

CH4(g) + 2O2(g) -> CO2(g) + 2H2O(l)

Hrxn = H0f products - H0f reactants

             = 2*-285.83-393.5 -(-74.81+2*)

              = -890.35KJ/mole

CH4(g) + 2O2(g) -> CO2(g) + 2H2O(l)      Hrxn = -890.35KJ/mole

1 mole of CO2 produce to released -890.35KJ

-890.35 Kj energy is released from 1 mole of CO2

-890.35 Kj energy is released from 44g of CO2

1KJ energy is released from = 44*1/890.35   = 0.05g of CO2

0.05g of CO2= 5*10^-2 g of CO2

                          = 5*10^-5Kg of CO2>>>>>answer

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