Question

If from 10 moles nh3 and 5 moles of h2so4 all the h atomes are removed in order to order to h2 gas the find the no. of h2 molecules fromed

Answer 1

1 mole ammonia contains 3 moles of hydrogen atoms.
So 10 moles of ammonia will contain 30 moles of hydrogen atoms .
1 mole of sulphuric acid contains 2 moles of hydrogen atoms .
So 5 moles of sulphuric acid will contain 10 moles atoms.
Total number of moles of hydrogen atoms = 30+10 = 40 moles
2 moles of hydrogen atoms make 1 mole of hydrogen gas
So 40 moles of hydrogen atoms will make 20 moles of hydrogen gas.
1 mole hydrogen gas contains 6.023*10^23 molecules.
20 moles of hydrogen gas will contain 20*6.023*10^23 molecules
=120.46*10^23 molecules.

Answer 2

Answer:
The number of hydrogen molecules formed 120.46 x 10^23
Explanation:
In 1 mole of ammonia = 3 moles of hydrogen
. 10 moles of ammonia = 3x10 = 30 moles of hydrogen
Like 1 mole of sulfuric acid = 2 moles of hydrogen
5 moles of sulfuric acid = 5x 2 = 10 moles of hydrogen

The total number of hydrogen = 30. + 10 = 40 moles of hydrogen
2moles of hydrogen atom forms one H2 molecule
Hence 40 moles of hydrogen atoms forms = 20 H2 molecules

1 molecules of H2 = 6.023 x 10^23 molecules ( Avagadro number)
20 molecules of H2 = 6.023x 10^23 x 20
= 120.46 x 10^ 23