Question

A sample of propane, C 3 H 8 , contains 14.1 moles of carbon atoms. How many total moles of atoms does the sample contain?

Answer 1

Answer:50.4 moles of atoms are present in the sample.

Step-by-step explanation:

Moles of carbon atom in propane = 14.1 moles of atom

Number carbon atoms
`14.1 mole* 6.022* 10^(23)=8.4* 10^(24) atoms`

In one molecule of propane there are 3 carbon atoms and 8 hydrogen atoms

For 1 carbon atom there are =
`(8)/(3)` hydrogen atoms

Number of hydrogen atom for
`8.4* 10^(24) atoms` of carbon :

`=8.4* 10^(24)* (8)/(3) atoms=2.2* 10^(25) atoms`

Total number of atoms =
`8.4* 10^(24) atoms+2.2* 10^(25) atoms`

`=3.04* 10^(25)` atoms

`Moles=\frac{\text{Total number of atoms}}{6.022* 10^(23)}`

`Moles=(3.04* 10^(25))/(6.022* 10^(23))=50.4`

50.4 moles of atoms are present in the sample.