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The specific heat of air at constant pre...

The specific heat of air at constant pressure is 1.005 kJ/kg K and the specific heat of air at constant volume is 0.718 kJ/kg K. If the universal gas constant is 8.314 kJ/kmole K find the molecular weight of air.

A

28.97

B

24.6

C

22.8

D

19.6

Text Solution

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The correct Answer is:
A
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Specific heat of oxygen at constant pressure is 0.2174 kcal/kg K. If the ratio of its specific heats is 1.4, find the universal gas constant given that J = 4200 J/kcal and molecular weight of oxygen is 32.

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Knowledge Check

  • The specific heat of air at constant pressure is 1.005 kJ/kg K and the specific heat of air at constant volume is 0.718 kJ/kgK. Find the specific gas constant.

    A
    0.287 kJ/kg K
    B
    0.21 kJ/kg K
    C
    0.34 kJ/kg K
    D
    0.19 kJ/kg K

  • The specific heat of air at constant pressure is 1.005 kJ/kg K and the specific heat of air at constant volume is 0.718 kJ/kgK. Find the specific gas constant.

    A
    0.287 kj/kg K
    B
    0.21 kJ/kg K
    C
    0.34 kJ/kg K
    D
    .19 kJ/kg K

  • The specific heat of air at constant pressure is 1.005 kJ/kg k and the specific heat of air at constant volume is 0.718 kJ/kgK. Find the specific gas constant

    A
    0.287 kj/kg K
    B
    0.21 kj/kg K
    C
    0.34 kj/kg K
    D
    0.19 kj/kg K

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    The specific heat of Argon at constant volume is 0.3122kJ/kg K. Find the specific heat of Argon at constant pressure if R = 8.314 kJ/k mole K. (Molecular weight of argon = 39.95)

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