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Duralin is an alloy of aluminium containing

4.5% manganese, 3.5% copper, and 0.45%
magnesium. How much magnesium is present
in a 90 g sample of this alloy?
Answer in units of mol

2 answers

What is .0045*90? then because that is in grams, divide that by the atomic mass of Mg.

6555

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