Ideal Gas Equation

In the volume-temperature graph for an ideal gas, the relation between the pressure and temperature for an ideal gas is given by the equation of state: Since the graph shows two different pressures at different temperatures, the relation between and is found to be:
Thus, the correct relation is .

We can use the ideal gas law: , where is the pressure, is the volume, is the total number of moles, is the universal gas constant, and is the temperature in Kelvin. m K moles J/mol K Pa.