1.

Relative molecular mass of sulphuric acid (H_(2)SO_(4)) is calculated as follows:

Answer»

Solution :Sulphuric ACID CONTAINS 2 atoms of hydrogen, 1 atom of sulphur and 4 atoms of oxygen.
Therefore, Relative molecular mass of sulphuric acid
`=(2xx"mass of hydrogen")+(1XX"mass of sulphur")+(4xx"mass of oxygen")`
`=(2XX1)+(1xx32)+(4xx16)=98`
i.e., ONE molecule of `H_(2)SO_(4)` is 98 times as heavy as `1//12^("th")` of the mass of a carbon `-12`.


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