What is the percent composition of carbon in heptane c7h16

the percent composition of carbon in heptane is 83.9%

Explanation:

1) Atomic masses of the atoms:

2) Molar mass of heptane:

3) Mass of carbon in one mole of heptane:

3) Percent composition of carbon:

           = (84.07 g/ 100.2 g) × 100 = 83.9% ← answer

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