contestada

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?

Respuesta :

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

Explanation:

Moles of carbon atom in propane = 14.1 moles of atom

Number carbon atoms [tex]14.1 mole\times 6.022\times 10^{23}=8.4\times 10^{24} atoms[/tex]

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

For 1 carbon atom there are = [tex]\frac{8}{3}[/tex] hydrogen atoms

Number of hydrogen atom for [tex]8.4\times 10^{24} atoms[/tex] of carbon :

[tex]=8.4\times 10^{24}\times \frac{8}{3} atoms=2.2\times 10^{25} atoms[/tex]

Total number of atoms =[tex]8.4\times 10^{24} atoms+2.2\times 10^{25} atoms [/tex]

[tex]=3.04\times 10^{25}[/tex] atoms

[tex]Moles=\frac{\text{Total number of atoms}}{6.022\times 10^{23}}[/tex]

[tex]Moles=\frac{3.04\times 10^{25}}{6.022\times 10^{23}}=50.4[/tex]

50.4 moles of atoms are present in the sample.