Question

calculate the molar mass of nitric acid HNO3 (H=1,N=14,O=16)

Answer 1

The molar mass of $\bold{HNO_3}$ is 63 u.

Explanation:

The "molar mass" of any substance indicates the addition of atomic masses of constituent atoms. In other words, the atomic mass must be added to get the "molar mass" of substance.

Hence, to calculate the molar mass, we must know the atomic masses of component atoms. Here, for the molar mass of nitric acid:

1. Atomic mass of H  =  1.001 u
2. Atomic mass of N = 14.01 u
3. Atomic mass of O  = 16.0 u

Hence, molar mass of $HNO_3$ will be:

$(1 \times 1.001)+(1 \times 14.01)+(3 \times 16.0)=63.01 \ u$

Answer 2

Answer:

63.01 g/mol is the molecular mass of nitric acid