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A sample of propane C3H8 contains 13.5 moles of carbon atoms how many total moles of atoms does the sample contain?

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    13.5 mols C X(1 m C3H8/ 3m C)=4.5 m c3h8
    4.5 miles c3h8 x 11 atoms in c3h8= 49.5 moles of atoms

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