Two containers A and B of equal volume contain 6 g of `O_(2)` and `SO_(2)` at 300K. and 1 atm. Then

Options

A. No. of molecules in A is less than that in B
B. No. of molecules in A is more than that in B
C. No. of molecules in A and B are same
D. none of these

Answer

B

Explanation

`O_(2)` =Mass=6g
Molar mass=32g
32 g of `O_(2)` contains `6.023xx10^(23)` molecules
`:.` 6g of `O_(2)` will contains=`(6.023xx10^(23))/32xx6=1.129xx10^(23)` molecules.
`SO_(2)`=Mass=6g
Molar mass =64g
64 g of `SO_(2)` contains `6.023xx10^(23)` molecules.
`:.` 6g of `SO_(2)` will contains =`(6.023xx10^(23))/64xx6=0.5646xx10^(23)` molecules
`:.` Number of molecules in A is more than that in B.