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+clc
+clear 
+//Input data 
+p=760;//The given pressure in mm of Hg 
+T=273;//The temperature of the chamber in K 
+V=22400;//The volume of the gas at N.T.P in cc 
+p1=10^-6;//The pressure in the chamber in mm of mercury pressure 
+N=6.023*10^23;//The Avogadro number 
+d=2*10^-8;//Molecular diameter in cm 
+pi=3.14;//Mathematical constant of pi 
+
+//Calculations 
+n=(N*p1)/(V*p);//The number of molecules per cm^3 in the chamber in molecules/cm^3 
+L=1/(pi*(d)^2*n);//The mean free path of the gas molecules in the chamber in cm 
+
+//Output 
+printf('The mean free path of gas molecules in a chamber is %3.4g cm ',L)