Combined Gas Law

Combined gas law is the relationship between pressure volume and temperature for a system with a constant amount of gas.  This law comes from the combination of three different laws: Boyle's Law, Charles' Law, and Gay-Lussac's Law.

 

Combined Gas Law formula
\(\large{  \frac{ p_1\;V_1 }{ T_1 }  =  \frac{ p_2\;V_2 }{ T_2 }  }\)
Symbol	English	Metric
\(\large{ p_1 }\) = pressure of the gas under conditions	\(\large{\frac{lbf}{in^2}}\)	\(\large{Pa}\)
\(\large{ T_1 }\) = temperature of the gas under conditions	\(\large{F}\)	\(\large{C}\)
\(\large{ V_1 }\) = volume of the gas under conditions	\(\large{in^3}\)	\(\large{mm^3}\)
\(\large{ p_2 }\) = pressure of the gas under conditions	\(\large{\frac{lbf}{in^2}}\)	\(\large{Pa}\)
\(\large{ T_2 }\) = temperature of the gas under conditions	\(\large{F}\)	\(\large{C}\)
\(\large{ V_2 }\) = volume of the gas under conditions	\(\large{in^3}\)	\(\large{mm^3}\)