Answer:
hope this answer will help you
Step-by-step explanation:
we can simply do this by unitary method
22.4L is requires or 1 mole of oxygen gas
54L requires 1/22.4×54 = 2.41 moles
we know that no. of moles =mass/mol.mass
in order to get mass we multiply moles by mol. mass
2.41×32=77.1g
so, the correct option is