In which one of the following cases the number of hydrogen atoms is more ?
Two moles of `HCl` or One mole of `NH_(3)`

Explanation

(i) Two moles of HCl can be written as `2HCl`. We can see that the two moles of `HCl` contain 2 moles of H atoms (or hydrogen atoms).
(ii) One mole of `NH_(3)` contains 3 moles of H atoms (or hydrogen atoms).
Now, two moles of HCl contains 2 moles of `NH_(3)` contains 3 moles of hydrogen atoms. It is obvious that 1 mole of `NH_(3)` contians more hydrogen atoms.