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1 mole Al = 26.98g/mol (atomic weight in grams)

1 mole Al = 6.022 X 1023 atoms Al

Convert 2.78g Al to moles.

2.78g Al x 1mol Al/26.98g = 0.103mol Al

Convert moles Al to atoms Al.

0.103mol Al x (6.022 x 1023atoms/mol) = 6.20 x 1022 atoms Al

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12y ago
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Q: How many aluminum atoms are in 2.78 of aluminum?
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