# Chemistry

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A sample of propane,C3H8, contains 14.4 moles of carbon atoms. How many total moles of atoms does the sample contain?

• Chemistry -

14.4 moles C atoms will have 14.4/3 moles propane (C3H8) molecules and 8x that for moles H atoms. Then add moles C + moles H.

• Chemistry -

So will this be my equation:
14.4 moles of C atoms x (1 mole C3H8/3 mole C) = 4.8 mole C3H8 (?)

but, i'm not sure how to do the one for H.

• Chemistry -

You don't have to do H.
But if you did, it'd be 14.4/3 (# moles) * 8 = 38.4

Each molecule has 11 atoms.
You have 4.8 moles = 52.8 moles of atoms
(Note how 52.8 = 14.4 + 38.4)

• Chemistry -

Do it as Steve suggested and it saves one step but the answer is the same either way.

• Chemistry -

A sample of propane, , contains 11.4 of carbon atoms. How many total moles of atoms does the sample contain?

• Chemistry -

it has 24.12 g

• Chemistry -

Which of the following compounds would contain a total of three carbon atoms

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