If 150 cc of gas A contains X molecules, how many molecules of gas B will be present in 75 cc of B

If 150 cc of gas A contains X molecules, how many molecules of gas B will be present in 75 cc of B?

1. The gases A and B are under the same conditions of temperature and pressure.
2. Name the law on which the above problem is based.

Answer       

1. No. of molecules of B = 75×x/150 = x/2
2. Avogadro’s law

• Exam Year: 2018