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Calculate the mass % of oxygen in Fe(3)O...

Calculate the mass % of oxygen in `Fe_(3)O_(4)`

Text Solution

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Formula mass of `Fe _(3) O _(4) = ( 3 xx 56) + ( 4 xx 16) = 232`
Mass % of oxygen `= (64)/(232) xx 100 = 27.6`
Ratio and mass % of elements in a compound is a constant.
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