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?
Answer in units of mol

2 answers

How many Mg WHAT?
g Mg = 32*0.0045 = ?
mols Mg = ?g Mg/atomic mass Mg = y
#atoms Mg = y mols Mg*6.02E23 = ??
32g*.45gMg/100gDuralin*1mol/24.305gMg

0.005924707mol Mg