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Calculate the % of oxygen in Al2 (SO4...

Calculate the % of oxygen in `Al_2 (SO_4)_3.`
(Atomic mass :`Al-12 ,O-16 ,S-32)`

Text Solution

Verified by Experts

Molar Mass of `Al_(2) (SO_(4))_(3)`
`=(27xx2 ) +(32 xx3) +(16 xx12)`
`=342`
% of oxygen in `Al _(2) (SO_4)_3`
` =("Mass of oxygen in compound ")/("Molar mass of "Al_(2)(SO_4)_(3))xx100`
`=(192 )/(342 )xx100 = 56.1%`
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