Question

In three moles of ethane, calculate the number of moles of carbon atoms.

Answer:

The number of moles of carbon atoms in ethane is 6.

As we know that the molecular formula of ethane is C₂H₆, we come to know that 1 molecule of ethane contains 2 atoms of carbon.
Therefore, 1 mole of ethane molecules will contain 2 moles of carbon atoms and so 3 moles of ethane molecules will contain 3*2 = 6 moles of carbon atoms.


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