Q. 74.9( 8 Votes )

Which of the following contains a maximum number of molecules?
A. 1g CO2

B. 1g N2

C. 1g H2

D. 1g CH4

Answer :

1g H2 contains a maximum number of molecules.

The molecules present in the 1g CO2:


Molar mass of CO2 = 44g


The number of molecules



=


= 0.02NA


The molecules present in the 1g N2 :


Molar mass of N2 = 28g


The number of molecules



=


= 0.03NA


The molecules present in the 1g H2 :


Molar mass of N2 = 2g


=


= 0.5NA


The molecules present in the 1g CH4 :


Molar mass of CH4 = 16g


=


= 0.06NA


Thus, we can see that 1g H2 contains the highest number of molecules.

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