Question

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

Answer 1

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.

Answer 2

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.

Answer 3

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)

Answer 4

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

Answer 5

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

Answer 6

it has 24.12 g

Answer 7

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

Answer 8

52.8 moles