Postsecondaire • 10m
upon complete combustion, a 1.00L sample ( at STP) of a natural gas gives off 43.6KJ of heat. If the natural gas is a mixture of CH4(g) and C2H6(g), what is the volume of methane in mL in the sample? keep 3 sig. figs.
useful information: CH4(g) + 2O2(g) --> CO2(g) + 2H2O(l) deltaH= -890.3KJ/mol
C2H6(g) + 7/2O2(g) --> 2CO2 (g) + 3H2O(l) deltaH= -1559.7KJ/mol
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