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A diatomic molecule can be modelled as two rigid balls connected with a spring such that the balls can vibrate with respect to the centre of mass of the system (spring + balls). Consider a diatomic gas made of such diatomic molecules. If the gas performs 20 J of work under isobaric condition, then heat given to the gas (in J ) is

Correct answer

70

Step-by-step solution

∆ Q W = nC p ∆ T nR ∆ T ⇒ ∆ Q = C P R . W = 7 2 × 20 =70 J

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