Calcalate the mass percent of different elements present in sodium sulphate `(Na_(2)SO_(4))`.

Explanation

Mass % of an element
`=("mass of the element present in the compound")/("molecular mass of the compound")xx100`
Molecular mass of `Na_(2)SO_(4)=(2xx23)+32+(4xx16)=162`
Mass percent of Na`=(46//142)xx100=32.39`
Mass percennt of `S=(32//142)xx100=22.54`
mas percent of `O=(64//142)xx100=45.07`