How many grams of C2H6 must be combusted to Provide 5.00x10^4 kJ of energy?

The ∆H of combustion of C2H6 is 1541kJ per mole.

2007-07-06 12:59:19 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

1 answers

number of moles needed is energy / heat of comb
= 5.00x10^4 / 1541 = 32.45 moles.
atomic weight of C2H6 is (2x12.01)+(6x1.01) = 30.08
mass needed = 32.45x30.08 grams

2007-07-06 13:53:01 · answer #1 · answered by Piglet O 6 · 0⤊ 0⤋

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