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Charles law

Physics

THE GAS LAWS

Pressure law  This law states that “the pressure of a fixed mass of a gas is directly proportional to the absolute temperature if the volume is kept constant”. The comparison between Kelvin scale and degrees Celsius is given by; θ0 = (273 + θ) K, and T (K) = (T – 273) 0C. Examples A gas in a fixed volume container has a pressure of 1.6 × 105 Pa at a temperature of 27 0C. What will be the pressure of the gas if the container is heated to a temperature of 2770C? Solution Since law applies for Kelvin scale, convert the temperature to kelvin T1 = 270C = (273 + 27) K = 300 K T2 = 2270C = (273 + 277) = 550 K P1 / T1 = P2 / T2, therefore P2 = (1.6 × 105) × 550 / 300 = 2.93 × 105 Pa. At 200C, the pressure of a… Read More »THE GAS LAWS

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