A 1.85-m3 rigid tank initially contains air whose density is 1.18 kg/m3. The tank is connected to a high-pressure supply line through a valv

Question

A 1.85-m3 rigid tank initially contains air whose density is 1.18 kg/m3. The tank is connected to a high-pressure supply line through a valve. The valve is opened, and air is allowed to enter the tank until the density in the tank rises to 5.30 kg/m3. Determine the mass of air that has entered the tank.

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Yến Oanh 5 years 2021-08-14T20:45:41+00:00 2 Answers 292 views 0

Answers ( )

  1. Nem
    0
    2021-08-14T20:47:22+00:00
    Reply

    Answer:

    we can conclude that mass of air that has entered the tank is 7.80 kg.

    Explanation:

    given data

    volume = 1.85 m³

    density 1 = 1.18 kg/m³

    density 2 = 5.30 kg/m³

    solution

    we know that density is the mass present in per unit volume so that is

    mass = density ×  volume    ……………………1

    here density is change so put here value in equation 1 we get

    mass = (  5.30 – 1.18 ) kg/m³  × 1.85 m³  

    solve it we get

    mass = 7.807 kg

    so we can conclude that mass of air that has entered the tank is 7.80 kg.

  2. Edana
    0
    2021-08-14T20:47:26+00:00
    Reply

    Answer:

    7.622 kg

    Explanation:

    Volume, V = 1.85 m³

    initial density of air, d = 1.18 kg/m³

    final density of air, d’ = 5.3 kg/m³

    initial mass of air, m = volume x initial density

    m = 1.85 x 1.18 = 2.183 kg

    final mass, m’ = volume x final density

    m’ = 1.85 x 5.3 = 9.805 kg

    mass of air entered, m’ – m = 9.805 – 2.183 = 7.622 kg

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