Match the following:

Column-I Column-II
A.  88 g of CO2 1. 0.25 mol
B.  6.022×1023 molecules of H2O 2.  2 mol
C.  5.6 L of O2 at STP 3.  3 mol   
D.  96 g of O2 4. 1 mol
Codes:
A B C D
1. 2 4 1 3
2. 1 2 3 4
3. 1 4 3 2
4. 4 1 3 2
Hint: Numberofmoles=amountofsubstancemolarmassofsubstance
A. Number of moles of CO2 molecule=WeightingramofCO2MolecularweightofCO2=8844=2mol
B. 1moleofasubstance=NAmolecules=6.022×1023molecules
=Avogadronumber
=6.022×1023moleculesofH2O=1mol
C. 22.4LofO2atSTP=1mol
5.6LofO2atSTP=5.622.4mol=0.25mol
D. Number of moles of 96 g of O2=9632mol=3mol