The chemical formula for C2H6 tells us that there are two carbon atoms in each molecule of ethane. Therefore, to find the number of moles of carbon atoms in 0.388 moles of C2H6, we can use the following steps:
1. Determine the total number of moles of carbon atoms in 0.388 moles of C2H6 by multiplying the number of moles of C2H6 by the number of carbon atoms per molecule:
0.388 moles C2H6 x 2 moles C / 1 mole C2H6 = 0.776 moles C
2. Round the result to the appropriate number of significant figures, if necessary.
Therefore, there are 0.776 moles of carbon atoms in 0.388 moles of C2H