(i) How many grams of `H_(2)S` are contained in 0.40 mole of `H_(2)S`?
(ii) How many gram atoms of H and S are contained in 0.40 mole of `H_(2)S`?
(iii) How many molecules of `H_(2)S` are contained in 0.40 mole of `H_(2)S`?
(iv) How many atoms of H and S are contained in 0.40 mole of `H_(2)S`?

Explanation

(i) 13.6 g (ii) 0.8 g atoms of H and 0.4 g atoms of S (iii) `2.4088xx10^(23)` molecules
(iv) `4.8176xx10^(23)` atoms of H and `2.4088xx10^(23)` atoms of S