Question

calculate the molar mass of a)water(H2O) b) nitric acid (HNO2)​

Answer 1

Answer:

the molar Mass of water (H2O) can be calculated by adding the molar masses of the individual elements present. Molar Mass of H2O = (2x1) + 16 = 2 + 16 = 18g/mol

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

Given

Atomic mass of H = 1u

Atomic mass of N = 14 u

Atomic mass of O = 16u

The molar mass of HNO3 is

(1 × 1) +(1 × 14) + (16×3) = 63 u.

Explanation:

Answer 2

Answer:

Atomic mass of hydrogen is 1 U

oxygen 16U

Molecular mass of H20 =2×1+1×6=18 anu

Molecular mass of HNO2 =(1 × 1) +(1 × 14) + (16×3) = 63 amu