Answer: Avogadro's Law states that volume is directly proportional to the oles of the gas.
Explanation: Expression fro ideal gas equation:
[tex]PV=nRT[/tex]
This law has arrived from the combination of four laws:
1) Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.
[tex]P\propto \frac{1}{V}[/tex] (At constant temperature and number of moles)
2) Charles' Law: This law states that volume is directly proportional to the temperature of the gas at constant pressure and number of moles.
[tex]V\propto T[/tex] (At constant pressure and number of moles)
3) Gay-Lussac's Law: This law states that pressure is directly proportional to the temperature of the gas at constant volume and number of moles.
[tex]P\propto T[/tex] (At constant volume and number of moles)
4) Avogadro's Law: This law states that volume is directly proportional to the number of moles of the gas at constant pressure and temperature.
[tex]V\propto n[/tex] (At constant temperature and pressure)
Hence, the correct answer is Avogadro's Law.
