Question

please solve the above question

Answer 1

heya ans is
p3
hope it helps

Answer 2

since density! is defines as ratio of mass to volume of that particular substance!!!

d=m/v

density is given to you!
and volume at STP is 22.4litres!!
and no. of moles =1



now u find the mass!

and since

no. of moles =mass(m)/molar mass

u can find the molar mass!
and u will hopefully get the ans.

give it a try!

coz the que. which we solve by ourselves remains a part of our memory recalling for a long time!!