Question

Calculate mass of 1.5 mol of HNO3

Plz answer it asap

Answer 1

Answer:

Molecular weight of HNO3 is (1+14+3×16)=63. So 1 mole of HNO3 weighs 63gm 1.5mole of HNO3

Answer 2

Given:

1.5 moles of nitric acid.

To find:

The mass.

Solution:

The chemical formula of nitric acid is $HNO_3$.

The atomic mass of N is 14.

The atomic mass of H is 1 and the atomic mass of oxygen is 16.

Thus, the molecular mass of nitric acid is 1+14+16×3=63 grams.

Thus we can write-

1 mole of nitric acid has a mass of 63 grams.

So, 1.5 moles of nitric acid has a mass of 63×1.5=94.5 grams.

So, 1.5 moles of nitric acid has a mass of 94.5 grams.