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Ethane is C2H6, with a molar mass of 30g/mol. 60g of ethane is 2mol. Avogadro's number (# of particles in a mole) = 6.02x1023. Avogadro x 2mol = 1.2x1024 ethane molecules.

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How many carbon atoms are contained in 5.50 gms of ethane?

30 g of ethane will have 6.023 x 1023 molecules of ethane So, 5.5 g will have 1.104 x 1023 molecules of ethane Since there are two carbon atoms, in one molecule of ethane, 5.5 g of ethane will have 2.208 x 1023 atoms of carbon.


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To calculate the number of molecules in 15 grams of ethane (C2H6), first find the molar mass of C2H6, which is 30.07 g/mol. Next, calculate the number of moles in 15 grams using the formula: moles = mass / molar mass. Finally, use Avogadro's number (6.022 x 10^23 molecules/mol) to convert moles to molecules.


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