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Today, we are going to learn about important gas laws: Boyle's law and Charles' law. Boyle's law, discovered by Robert Boyle in 1662, states that the volume of a gas is inversely proportional to the temperature at a constant temperature. Charles' law, on the other hand, states that the volume of a gas is directly proportional to the absolute temperature at a constant pressure. Dear students, today we are going to discuss important gas laws, the fundamentals of gas laws. First we are going to study Boyle's law. What is Boyle's law? Boyle's law is discovered by Robert Boyle in 1662. Boyle's law states that, at a constant temperature, the volume of a given mass of a gas is inversely proportional to the temperature. Understand? Boyle's law states that, at a constant temperature, the volume of a given mass of a gas is inversely proportional to the temperature. Next law is Charles' law. Charles' law states that, at a constant pressure, Boyle's law at a constant temperature, Charles' law but at a constant pressure. Charles' law states that, at a constant pressure, the volume of a given mass of a gas is directly proportional to the absolute temperature. Okay.