Calculate the number of GMM present in $96 \mathrm{g}$ oxygen?

Complete the flow chart given below, related to one mole of substance.

Examine the data given in the table (Temperature and number of molecules of the gas are kept constant).

a) Calculate $\mathrm{P}\times \mathrm{V}$.

b) Which is the gas law related to this.

Analyse the situations given below and explain the gas law associated with it. 
a) A balloon is being inflated. 

b) When an inflated balloon is immersed in water, its size decreases.