Redusing the pressure from 1.0 to 0.5 atm would change the number of molecules in one mole of ammonia to

Options

A. 75% of initial value
B. 50% of initial value
C. 25% of initial value
D. none of these

Explanation

Number of molecules in one mole of a gas viz. `6.023xx10^(23)` is independent of pressure.
Hence, (D) is the correct answer.