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An insulated cylinder of volume 60 ~cm ³ is filled with a gas at 27^ C and 2 atmospheric pressure. Then the gas is compressed making the final volume as 20 ~cm ³ while allowing the temperature to rise to 77^ C . The final pressure is _ _ _ _ atmospheric pressure.

Correct answer

7

Step-by-step solution

PV = nRT P₁ V₁ RT₁ = P₂ V₂ RT₂ 2 10^5 60 300 = P₂ 20 350 P₂ = 2 10^5 7 3 6 P₂ = 7 10^5 = 7 atm

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