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Calculate the mass of 3 gram molecules o...

Calculate the mass of 3 gram molecules of sulphuric acid.

Text Solution

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Molecular formula of sulphuric acid is `H_(2)SO_(4)`. Therefore, molecular mass of `H_(2)SO_(4) = 2 xx` atomic mass of `H + 1 xx` atomic mass of `S+ 4 xx` atomic mass of oxygen `=2 xx 1+ 32+ 4 xx 16=98`
One gram molecule of `H_(2)SO_(4)= 98g`
`therefore 3` gram molecule of `H_(2)SO_(4) = 98 xx 3 = 294g`
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