Question

Calculate the molar mass of the following compounds

1)Urea [CO(NH2)21
2)Acetone [CH,COCH]
3)Boric acid [H,BO3]
4)Sulphuric acid (H2SO4]
in easy method​

Answer 1

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Answer 2

1. urea [CO(NH2)2]  

Atomic mass of C =12

Atomic mass of O =16  

Atomic mass of 2(N) = 28  

Atomic mass of 4(H) = 4  

∴ Molar mass of Urea = 60 2.

acetone [CH3COCH3]  

Atomic mass of 3(C) = 36  

Atomic mass of 1(0) = 16  

Atomic mass of 6(H) = 6  

∴ Molar mass of Acetone = 58 3.

boric acid [H3BO3]  

Atomic mass of B = 10  

Atomic mass of 3(H) = 3  

Atomic mass of 3(O) = 48  

∴ Molar mass of Boric acid = 61 4.

sulphuric acid [H3SO4 ]

Atomic mass of 2(H) = 2  

Atomic mass of 1(S) = 32  

Atomic mass of 4(O) = 64  

∴ Molar mass of Sulphuric acid = 98