Question

Four one litre flasks are separately filled with the gases, $O_2,F_2,C{H}_4$ and $C{O}_2$ under the same conditions. The ratio of number of molecules in these gases:

• A. 2 : 2 : 4 : 3
• B. 1 : 1 : 1 : 1
• C. 1 : 2 : 3 : 4
• D. 2 : 2 : 3 : 4

Answer 1

The correct option is B 1 : 1 : 1 : 1

Here all the compounds are given in gaseous state.
For gases the number of molecules per 22.4 liter is $6.023\times {10}^{23}$ despite the different molecular masses.
So, the number of molecular per 1 liter of each gases $(O_2,F_2,C{H}_4,andC{O}_2)$ would be same.