Question

the number of gram atoms of hydrogen present in 1.5 mole of hydrogen sulphide is. 1)3. 2)2. 3)1. 4)0.5

Answer 1

Answer : The number of atoms of hydrogen present in 1.5 mole of hydrogen sulfide is, $18.066\times 10^{23}$

Explanation : Given,

Moles of hydrogen sulfide = 1.5 mole

Gram atoms means that the number of atoms present in mole of substance.

The molecular formula of hydrogen sulfide is, $H_2S$.

In hydrogen sulfide molecule, there are 2 hydrogen atoms and 1 sulfur atom.

As, 1 mole of hydrogen sulfide contains $2\times 6.022\times 10^{23}$ number of hydrogen atoms

So, 1.5 mole of hydrogen sulfide contains $1.5\times 2\times 6.022\times 10^{23}=18.066\times 10^{23}$ number of hydrogen atoms

Therefore, the number of atoms of hydrogen present in 1.5 mole of hydrogen sulfide is, $18.066\times 10^{23}$