chemistry need help
posted by chrissy .
How many atoms of aluminum are there in 125 g of aluminum foil?

find the number of moles of al.
then multiply by avagradro's number. 
1. Divide the grams of aluminum by the molar mass of aluminum (26.98g/mole) to convert mass to moles.
2. Multiply the number of moles of aluminum by Avogadro's Number (6.02x10^23 atoms/mole).
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