How many moles of electrons are required to produce 6.80 g Mg from molten MgCl2?

S

Sarah

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1.How many moles of electrons are required to produce 6.80 g Mg from molten MgCl2?
__________mol e-
2.How many moles of electrons are required to produce 16.8 g Cu from a CuSO4 solution?
__________mol e-

please help me how to do these problems
 
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