CHEMISTRY · Single correct · A Level · Chemistry · Amount of substance · Amount of substance
Problem
The density of a certain gaseous oxide at STP is 1.43g/L. What is the molecular mass of this gas?
1.43×22.4=
(1) 16 g/mol
(2) 32 g/mol
(3) 44 g/mol
(4) 28 g/mol