Question

calculation of molecular mass
HNO 3
CHCL3 ​

Answer 1

Hno3=63u
Chcl3=119.5u

Answer 2

Answer:

The molecular  mass of the chemical substance is equal to the sum of the atomic mass of the individual atoms.

 1- The molecular  mass of HNO3 is

(1 × 1) +(1 × 14) + (16×3) = 63 u.

2-Molecular mass of chloroform (CHCl  3  )=1×C+1×H+3×Cl=(12+1+106.5)u=119.5u