Question

How many numbers of molecules present in 22g of CO2

Answer 1

No.of moles of co2 present =given mass /molecular mass =22/44=0.5 moles of CO2
Number of molecules =Avogadro number (6.022×10^23)/no.of moles
Therefore number of molecules =6.022×10^23/0.5=3.011×10^23