Which one of the following parts of gases contains the same number of molecules?

Options

A. 16 g of `O_(2)` and 14 g of `N_(2)`
B. 8 g of `O_(2)` and 22 g of `CO_(2)`
C. 28 g of `N_2` and 22 g of `CO_(2)`
D. 32 g of `O_(2)` and 32 g of `N_(2)`

Answer

A

Explanation

16 g of `O_(2)` has number of moles = `16/32 = 1/2`
14 g of `N_2` has number of moles `= 14/28 =1/2`
No. of moles are same, so no. of molecules are also same.