The graphical representation of number of molecules of different gases is given. Which gases are placed at correct position?

Options

A. `H_2, He`
B. `N_2, CH_4`
C. `He , CH_4 `
D. `H_2, CH_4`

Answer

C

Explanation

2g of `H_2 -= 6.023 xx 10^(23)` molecules
1 g of `H_2 -= (6.023 xx 10^(23))/(2)` molecules
1 g of `H_2 -= (6.023 xx 10^(23))/(2)` molecules i.e., `3.011 xx 10^(23)` molecules
4 g of `He -= 6.023 xx 10^(23)` molecules
2g of `He -= (6.023 xx 10^(23))/(4) xx 2` molecules i.e., `3.011 xx 10^(23)` molecules
28 g of `N_2 -= 6.023 xx 10^(23)` molecules
3g of `N_2 -= (6.023 xx 10^(23))/(28) xx 3 ` molecules i.e., `0.6453 xx 10^(23)` molecules
16 g of `CH_4 -= 6.023 xx 10^(23)` molecules
4g of `CH_4 -= (6.023 xx 10^(23))/(16) xx 4 ` molecules i.e., ` 1.505 xx 10^(23)` molecules
Thus , in graph , He and `CH_4 ` gases are placed at correct position