Question

Find the number of moles of oxygen in 11.2 litre of oxygen at STP.

Answer 1

1 mole --------22.4l
_mole -------11.2
=11.2/22.4=1/2=0.5moles
Hope it helped you

Answer 2

here we use the formula of no. of moles =volume/22.4l
so, n=11.2/22.4
n=0.5 moles