# What is the relative molecular weight of "H"_2"SO"_4 ?

Mar 3, 2018

For finding the molecular mass , you need to calculate the sum of masses of different elements multiplies by their number of atoms in one molecule of its compound.

$\implies 2 \times \text{Mass of hydrogen" + "Mass of sulphur" + 4xx"Mass of oxygen}$

Here , Mass of one hydrogen atom $= 1 u$.

Mass of one sulphur atom $= 32 u$.

Mass of one oxygen atom $= 16 u$.

We get , Mass of one molecule of ${H}_{2} S {O}_{4}$

$\implies 2 \times 1 + 32 + 4 \times 16$

$\implies 2 + 32 + 64$

$\implies 98 u$