At 47c a gas has a pressure of 140kpa. The gas is cooled until the pressure decreases to 105kpa. If the volume remains constant, what will t

Question

At 47c a gas has a pressure of 140kpa. The gas is cooled until the pressure decreases to 105kpa. If the volume remains constant, what will the final temperature be in kelvin’s? In degrees Celsius

in progress 0
Thạch Thảo 5 months 2021-08-29T01:02:47+00:00 1 Answers 20 views 0

Answers ( )

    0
    2021-08-29T01:04:00+00:00

    Answer:

    The final temperature is equal to 240 K or -33.15°C

    Explanation:

    Given that,

    Initial temperature of the gas, T₁ = 47°C = 320 K

    Initial pressure, P₁ = 140 kpa

    Final pressure, P₂ = 105 kpa

    We need to find the final temperature if the volume remains constant.  The relation between temperature and pressure is given by :

    P\propto T

    or

    \dfrac{P_1}{P_2}=\dfrac{T_1}{T_2}\\\\T_2=\dfrac{P_2T_1}{P_1}\\\\T_2=\dfrac{105\times 320}{140}\\\\T_2=240\ K\\\\T_2=-33.15^{\circ} C

    So, the final temperature is equal to 240 K or -33.15°C.

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )