# Problem: Ethane has molecular formula C2H6. What is the percent composition of carbon and hydrogen in ethane? Round the molar mass of carbon to 12 g/mol and the molar mass of hydrogen to 1.0 g/mol.A. 60.% carbon and 40.% hydrogenB. 65.% carbon and 35.% hydrogenC. 70.% carbon and 30.% hydrogenD. 75.% carbon and 25.% hydrogenE. 80.% carbon and 20.% hydrogen

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96% (198 ratings) ###### Problem Details

Ethane has molecular formula C2H6. What is the percent composition of carbon and hydrogen in ethane? Round the molar mass of carbon to 12 g/mol and the molar mass of hydrogen to 1.0 g/mol.

A. 60.% carbon and 40.% hydrogen

B. 65.% carbon and 35.% hydrogen

C. 70.% carbon and 30.% hydrogen

D. 75.% carbon and 25.% hydrogen

E. 80.% carbon and 20.% hydrogen

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