Question

mass of co2 is what whenit occupied volume is 11.2

Answer 1

we know that
no. of moles= total volume /22.4(volume at stp)
no. = 11.2/22.4
no. of mole= 0.5

now,
again by another formula

no. of moles= total mass/ mw of compound

so from here no. of moles= 0.5
then
0.5=x/44. (x= no. of moles)

x= 22gm. ( 44 is the mw of co2)