Final answer:
The Ideal Gas Law combines Boyle's Law, Charles's Law, Avogadro's Law, and Gay-Lussac's Law.
Step-by-step explanation:
The gas law that combines Boyle's Law, Charles's Law, Avogadro's Law, and Gay-Lussac's Law is called the Ideal Gas Law. It is named after the French physicist Émile Clapeyron, who first formulated it in 1834. The Ideal Gas Law is expressed as: PV = nRT, where P represents pressure, V represents volume, n represents the number of moles of gas, R is the ideal gas constant, and T represents temperature.