Answer:
One mole of H₂S contains 2 atoms of hydrogen
Explanation:
In one mole of NaOH : 1 atom of Na and 1 atom of O and 1 atom of H
one mole of H₂S : 2 atoms of H and 1 atom of S
one mole of NH₃ : 1 atom of N and 3 atoms of H
One mole of CH₄ : 1 atom of C and 4 atoms of H
