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Moles of Aluminum, Sulfur and Oxygen Atoms

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Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 8.00 of aluminum sulfate, .
Express the number of moles of Al, S, O, and atoms numerically, separated by commas.

Calculate the number of moles of magnesium, chlorine, and oxygen atoms in 8.40 of magnesium perchlorate, .
Express the number of moles of Mg, O, Cl and atoms numerically, separated by commas.

A sample of propane, , contains 10.1 of carbon atoms. How many total moles of atoms does the sample contain?
Express the total number of moles of carbon and hydrogen numerically.

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The expert calculates the number of moles of aluminum, sulfur and oxygen atoms in aluminum sulfate.

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Moles
Calculate the number of moles of aluminum, sulfur, and oxygen atoms in 8.00 of aluminum sulfate, .
Express the number of moles of Al, S, O, and atoms numerically, separated by commas.

Formula of Aluminum sulfate is Al2(SO4)3 and molar mass = 342 g/mol.

Note: Unit for amount of Aluminum sulfate is not specified.

Assuming 8.00 moles Aluminum sulfate is given:
8.00 moles Al2(SO4)3 x 2 moles Al / mole Al2(SO4)3 = 16 moles Al
8.00 moles Al2(SO4)3 x 3 moles S / mole Al2(SO4)3 = 24 moles S
8.00 moles Al2(SO4)3 x 12 moles O / mole Al2(SO4)3 = 96 moles O
Answer for number of moles of Al, S, O: 16, 24, 96

Assuming 8.00 grams Aluminum ...

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