ideal gas law M P RTEnRT n n is the number of moles of gas present, and r is universal gas constant. R=8.31J/mol.k)=0.082atm·L/(mol·K) Another form of ideal gas law is: pV= NT Nis total number of molecules in the sample k is called Boltzmann constant, which is defined as r 831J/mol K k 1.38×10-23J/K N.6.02×1023/molRT nRT M pV = =  ideal gas law R = 8.31 J/(mol K) = 0.082atm L/(mol K) n is the number of moles of gas present, and R is universal gas constant. NA N n = Another form of ideal gas law is: pV = NkT N is total number of molecules in the sample. k is called Boltzmann constant, which is defined as . J/K . /mol . J/mol K 23 23 1 38 10 6 02 10 8 31 − =    = = NA R k