Which laws can be combined to form the ideal gas law?

A. Boyle's law and Charles's law

B. Gay-Lussac's law and Avogadro's law

C. Charles's law, Avogadro's law, and Boyle's law

D. Dalton's law, Gay-Lussac's law, and Avogadro's law

Answer: Charles's law, Avogadro's law and Boyle's law.

Justification:

Boyle's law states that at constant temperature PV = constant

Charles law states that at constant pressure V/T = constant

Avogadro's law states that at constant pressure ant temperature, equal volume of gases contain equal number of moles: V/n = constant

Ideal gas law states PV/nT = constant = > PV = nT*constant = PV = nTR