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For this you need the Atomic Mass of Al. Take the number of moles and multiply it by the atomic mass. Divide by one mole for units to cancel.

2.91 moles Al × (27.0 grams) = 78.6 grams Al

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15y ago
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8y ago

Aluminum's molar mass is 26.98 g/mol.

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Q: 2.91 moles of aluminum are how many grams?
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