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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)
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