Asked by mandee

how many grams of ethylene would have to be burned to produce 450 kJ of heat?
Answered by DrBob222
You need the heat of combustion for ethylene.
C2H4 + 3O2 ==> 2CO2 + 2H2O

450 kJ/heat combustion per mole = # moles C2H4 burned.
Then # moles C2H4 x molar mass C2H4 = grams C2H4.

Answered by Lisa
What is the mass of water that can be heated from 39 C to 80 C by the combustion of 150 g of methane. CH4 + 2O2 => CO2 + 2H2O Delta H= -890kJ
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