What would be the molality of 20% (mass/ mass) aqueous solution of KI?
(molar mass of KI = 166 g mol^–1)

For a reaction,
N₂(g) + 3H₂(g) $$ \to $$ 2NH₃(g) ;
identify dihydrogen (H₂) as a limiting reagent in the following reaction mixtures.

The percentage composition of carbon by mole in methane is :

8 g of NaOH is dissolved in 18g of H₂O. Mole fraction of NaOH in solution and molality (in mol kg^–1) of the solution respectively are -