How many molecules contain in 0.40 moles of ​H2S ?

1 mole H2S  contains = 2 moles of H or 2 X 6.023 x 10 ²³ atoms .  .4 mol contains = .4 x 2 x 6.023 x 10 ²³ atoms. Similarly, 1 mole H2S contains = 1 mole of S = 6.023 X 10 ²³               .4 mol H2S contains = .4 x 6.023 x 10 ²³atoms