Question

4.4 gram of an unknown gas occupies 2.24 litres of volume at STP the gas may be
(1) N2O
(2)CO
(3)CO2
(4)1 and 3 both

Answer 1

hey!!
ur answer is 4
n2o and co2 both
if u calculate the the molecular mass of that unknown gas with the help of relation between number of moles then the molecular mass is 44 which n2o and co2 has both

hope it helps u

Answer 2

i think option 4 is  the answer ,
    let the compound be  x,
n of x = 2.24/22.4=0.1
again,
   n of x = mass in gm / atomic mass 
or, 0.1 = 4.4gm/ atomic mass 
: atomic mass = 44 gm 
 
so,
atomic mass of both N2O and CO2 is 44 .