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During the combustion of 5.00 g of octane, C8H18, 239.5 kcal is released.

a) What is the sign of (delta)H for this reaction?

b) How much energy is released by the combustion of 1.00 mol of C8H18

2 answers

a) negative

b) 1.00 mol C8H18 x 114.26g C8H18/1mol x 239.5 kcal/5.00g C8H18 = 5.47x10^3 kcal or 5473.054 kcal

yeah

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