PhysicsHow much heat energy in joules must be supplied to 14 gms of nitrogen at room temperature to raise its temperature by 400C at constant pressure ? (Mol. wt. of N2 = 28 gm, R = constant)

How much heat energy in joules must be supplied to 14 gms of nitrogen at room temperature to raise its temperature by 400C at constant pressure ? (Mol. wt. of N2 = 28 gm, R = constant)

  1. A

    50R

  2. B

    60R

  3. C

    70R

  4. D

    80R

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    Solution:

    dQp=ncpdT=mMcpdT=1428×72R(40)=70R

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