The statement that the volume of a fixed amount of a gas at a constant pressure is directly proportional to its absolute temperature is known as ________ Law.

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This law, also known as the law of volumes, states that at a constant pressure, the volume of a given mass of gas is directly proportional to its absolute temperature, i.e., V ∝ T. This law is named after the French physicist Jacques Charles who first observed it in the late 18th century. Boyle's Law relates the pressure and volume of a gas, Gay-Lussac's Law relates the pressure and temperature of a gas, and Avogadro's Law relates the volume and number of moles of a gas.

The Statement That the Volume of a Fixed Amount of a Gas