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Calculate the mass percent (w//w) of sul...

Calculate the mass percent `(w//w)` of sulphuric acid in a solution prepared by dissovles 4 g of sulphur trixoide in a 100ml of sulphuric acid solution containing 80 mass percent `(w//w)` of `H_2SO_4` and having a density of 1.96 g/ml.
(Molecular weight of `H_2SO_4=98 gm`) Taken reaction `SO_3+H_2OtoH_2SO_4`

A

0.8085

B

0.84

C

0.4165

D

None of these

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The correct Answer is:
A
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