Question

The maximum number of molecules are present in

• A. $15Lof{H}_{2}gasatSTP$
• B. $5Lof{N}_{2}gasatSTP$
• C. $0.5gof{H}_{2}gas$
• D. $10gof{H}_{2}gas$

Answer 1

The correct option is D $10gof{H}_{2}gas$

Here number of moles is highest for 10g of $H_2$ gas. Hence, it will contain the maximum number of molecules.

For 15L of $H_2$ gas $n=0.7mol$

For 5L of $N_2$ gas $n=0.2mol$

For 0.5g of $H_2$ gas $n=0.25mol$

For 10g of $H_2$ gas $n=5mol$