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October 2, 2014

October 2, 2014

Posted by **lynn** on Sunday, November 6, 2011 at 4:46pm.

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

- chemistry -
**bobpursley**, Sunday, November 6, 2011 at 4:52pmWhat is .0045*90? then because that is in grams, divide that by the atomic mass of Mg.

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