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What amount of heat must be supplied to `2xx10^(-2)Kg` of nitrogen at room temperature to rise its temperature by `45^(@)C` at constant pressure? Given molecular mass of nitrogen is 28 and `R=8.3J mol e^(-1)K^(-1)`

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What amount of heat must be supplied to 2.0 xx 10^(-2) kg of nitrogen (at room temperature ) to raise the temperature by 45^(@)C at constant pressure. Molecular mass of N_(2) = 28 , R= 8.3 J "mol"^(-1) K^(-1) .

What concentration of nitrogen should be present in a glass of water at room temperature ? Assume a temperature of 25^(@)C , a total pressure of 1 atmosphere and mole fraction of nitrogen in air as 0.78 [ K_(H) for nitrogen =8.42xx10^(-7)"M/mm Hg" ].

Knowledge Check

  • The amount of heat supplied to 4 xx 10^(-2)kg of nitrogen at room temperature to rise its temperature by 50^(@)C at constant pressure is (Molecular mass of nitrogen is 28 and R = 8.3 J mol^(-1) K^(-1) )

    A
    2.08 kJ
    B
    3.08 kJ
    C
    4.08 kJ
    D
    5.08 kJ

  • The amount of heat supplied to 4xx10^(-2) kg of nitrogen at room temperature to rise its temperature by 50^(@)C at constant pressure is (Molecualr mass of nitrogen is 28 and R= 8.3 J mol^(-1)K^(-1))

    A
    2.08 KJ
    B
    3.08 KJ
    C
    4.08 KJ
    D
    5.08 KJ

  • What amount of heat must be supplied to 35 Gg of oxygen at room temperature to raise its tempreature by 80^(@)C at constant voume (moleucalr mass of oxygen is 32 and R= 8.3 j mol^(-1) K^(-1))

    A
    1.52 KJ
    B
    3.23 KJ
    C
    1.81 KJ
    D
    1.62 KJ

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    If a quantity of heat 1163.4 joule is suppled to one mole of nitrogen gas , at room temperature at constant pressure, then the rise in temperature is (Given R = 8.31 J "mole"^(-1)K^(-1) )

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