Correct the following:

(a) Equal volumes of any gas, under similar conditions, contain an equal number of atoms.

(b) 22 g of CO₂, occupies 22.4 litres at STP.

(c) The unit of atomic weight is grams.

(a) Equal volumes of any gas, under similar conditions, contain an equal number of molecules.

(b) 44 g of CO₂, occupies 22.4 litres at STP.

(c) The unit of atomic weight is atomic mass unit (a.m.u).