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Calculate the total percentage of oxygen...

Calculate the total percentage of oxygen in magnesium nitrate crystals `Mg(NO_(3))_(2).6H_(2)O` (Atomic masses H = 1, N = 14, O = 16, Mg = 24)

Text Solution

Verified by Experts

Molecular mass of `Mg(NO_(3))_(2).6H_(2)O=Mg+2N+12O+12H`
`=24+(2xx14)+(12xx16)+(12xx1)=256`
Mass percentage of oxygen=` (12xx "Atomic mass of")/("Molecular mass of magnesium nitrate")`
`=(12xx16)/(256)=75`
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