Question

What is the gram molecular mass of one molecule of hno3?

Answer 1

Gram molecular mass of one mole of HNO3 = 1+14+3(16)=63 gms .Gram molecular mass of one molecule of HNO3 =63/6.022×10^23 = 10.46 ×10^-23 gms = 10.46 ×10^-26 kg as one mole has 6×10^23 molecules .

Answer 2

The gram molecular mass of 1 molecule of HNO3 is 10.46 x 10^-23 g.

Given,

We know that-

Mass of H = 1 g

Mass of N = 14 g

Mass of O = 16 g.

To find,

Gram molecular mass of HNO3.

Solution:

Mass of 1 mole of HNO3 = 1+14+(16x3)

= 63 g.

Mass of 1 molecule of HNO3 = 63/Avogadro's number

Avogadro's number = 6.022 x 10^23

Mass of 1 molecule of HNO3 = 63/6.022 x 10^23

=10.46 x 10^-23.

Thus, the gram molecular mass of HNO3(nitric acid) is 10.46 x 10^-23 g.

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