A sample of propane, C3H8, contains 10.0 moles of carbon atoms. How many total moles of atoms does the sample contain? Express the total number of moles of carb

Question

Chemistry 

Answer 1

Hi Saf,

We need to calculate the ratio of C to H in the molecule:

We have 3 C and 8 H, so the ratio is 3:8

If we have 10.0 moles C, we divide that by the number of C atoms to get the factor:

10/3 = 3.33

The we multiply the number of H atoms, 8, by this factor:

3.33 x 8 = 26.67

So we have 10.0 moles of C and 26.67 moles of H for a total of 36.67 moles in the sample.

Thanks

Beth