The Combined Gas Law is:
P V T = c o n s t a n t , o r , P 1 V 1 T 1 = P 2 V 2 T 2 {\displaystyle {\frac {PV}{T}}=constant,or,{\frac {P_{1}V_{1}}{T_{1}}}={\frac {P_{2}V_{2}}{T_{2}}}}
Boyle's Law
Avogadro's Principle
