# Chemistry

Duralin is an alloy of aluminium containing
4.5% manganese, 3.5% copper, and 0.45%
magnesium. How much magnesium is present
in a 32 g sample of this alloy?

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1. How many Mg WHAT?
g Mg = 32*0.0045 = ?
mols Mg = ?g Mg/atomic mass Mg = y
#atoms Mg = y mols Mg*6.02E23 = ??

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2. 32g*.45gMg/100gDuralin*1mol/24.305gMg

0.005924707mol Mg

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