1.

Find out the molecular mass of sulphuric acid .

Answer»

Solution :The molecular FORMULA of sulphuric ACID is `H_(2)SO_(4)` .
Atomic MASS of H = 1
Atomic mass of O = 16 .
Atomic mass of S = 32
`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 O)
`= (2 xx 1) + ( 1 xx 32 ) + ( 4 xx 16) = 2 + 32 + 64 = 98.`
So , molecular mass of `H_(2)SO_(4)` = 98


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