Calculate the molar mass of the following compounds.
(i)Urea `|CO(NH_(2) )_(2)|`
(ii) Acetone `|CH_(3)COCH_(3)|`
(iii) Boric acid `|H_(3)BO_(3)|`
(iv) Sulphuric acid `|H_(2) SO_(4)|`

Explanation

(i) Urea`[CO(NH_(2)]`
Atomic mass of C=12
Atomic mass of O=16
Atomic mass of 2(N)=28
Atomic mass o f4(H)=4
`:.` Molar mass of Urea=60
(ii) Acetone`[CH_(3)COCH_(3)]`
Atomic mass of 3( C)=36
Atomic mass of 1(O)=16
Atomic mass of 6(H)=6
`:.` Molar mass of Acetone=58
(iii) BOric acisd `[H_(3)BO_(3)]`
Atomic mass of B=10
Atomic mass of 3(H)=3
Atomic mass of 3(O)=48
`:.` Molar mass of Boric acid=61
(iv) Sulphuric acid `[H_(2)SO_(4)]`
Atmic mass of 2(H)=2
Atomic mass of 1(S)=32
Atomic mass of 4(O)=64
`:.` Molar mass of SUlphuric acid =98