Question

molarity concentration of 96 g of o2 contained in 2 lit vessel

Answer 1

Molarity is no of mole of solute per Litre of solution .
e.g Molarity = no of mole of solute /volumeof solution in L

Here,
given wt of solute = 96 g
mole of solute = given wt /molar wt
= 96 g/32g = 3

no of mole of solute = 3
volume of solution = 2 Litre

so,
molarity = 3/2 = 1.5 mol/Litre

Answer 2

Weight of solute= 96g. (given)
milar wt of O2= 32
mole of solute= given wt./molar wt.
= 96/32
=3
vol.of solution=2litre
molarity =no.of moles of solute/vol of solution
molarity =3/2
molarity =1.5 mol/litr