If $C_P$ and $C_V$ are the specific heats of unit mass of nitrogen at constant pressure and constant volume respectively,then:

  • A
    $C_P - C_V = R/28$
  • B
    $C_P - C_V = R/14$
  • C
    $C_P - C_V = R$
  • D
    $C_P - C_V = 28R$

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