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6 April, 12:11

Two gas samples have the same number of molecules, the same volume, and the same pressure. Which of the following could be true? A. The first gas sample has a temperature of 273 K, and the second gas sample has a temperature of 0o C. B. The first gas sample has a temperature of 273 K, and the second gas sample has a temperature of 298 K. C. The first gas sample has a temperature of 273 K, and the second gas sample has a temperature of 273o C. D. The first gas sample has a temperature of 273 K, and the second gas sample has a temperature of 100o C.

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Answers (2)
  1. 6 April, 13:35
    0
    Lets name one gas sample as A and other gas sample as B.

    we can apply ideal gas law equation for both samples

    PV = nRT

    P - Pressure of A = Pressure of B

    V - volume of A = volume of B

    n - number of molecules of both A and B being equal is equivalent to number of moles of A = number of moles of B

    R - universal gas constant

    Tᵃ - temperature of A

    Tᵇ - temperature of B

    for gas A

    PV = nRTᵃ - - 1)

    for gas B

    PV = nRTᵇ - - - 2)

    when we divide both equations

    1 = Tᵃ / Tᵇ

    Tᵃ = Tᵇ

    both temperatures are equal

    temperature in Celsius + 273 = temperature in Kelvin

    therefore 0 °C = 273 K

    the correct answer is

    A)

    The first gas sample has a temperature of 273 K, and the second gas sample has a temperature of 0 ° C
  2. 6 April, 14:59
    0
    The correct answer is (A) : The first gas sample has a temperature of 273 K, and the second gas sample has a temperature of 0 C.
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