Question

What volume of CO2 will contain same number of molecules as are present in 16 gram of oxygen

Answer 1

1 mole of CO2 contains 1 mole of O2 i.e, 32 grams. So, 16 grams of O2 will require 0.5 mole of CO2.
So volume of co2=0.5×22.4=11.2