Question

How to solve this ? :- Which of the following contains maximum number of molecules ? (a) 4g of O2 (b) 4g of NH3 (c) 4g of CO2 (d) 4g of SO2.

Answer 1

Moles is directly proportional to the number of molecules whereas moles is inversely proportional to the relative molecular mass of the molecule.
Moles = Mass/Mr
since mass is constant for all gases, gas with least Mr will have most number of molecules.
Mr: O2= 32 g
Nh3= 17g
co2= 44g
so2= 64g
Hence NH3 will have most number of molecules.

Answer 2

Answer:

1 mole of CO2

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