Question

20. Which contains least no. of molecules -
(1)1 g CO 2
(2) 1 g N2
(3) 1 g 02
(4) 1 g H2​

Answer 1

CO2

Because it has the highest molecular mass among all these so we get very less no. of moles for 1 gram .

So we get the least no. of molecules.

Answer 2

Answer:

I think

H2

I hope it helps you