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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB

PhysicsMediuminteger

Four moles of an ideal gas at 500 K are cooled at constant volume until the pressure is one-third, then heated at constant pressure back to 500 K. Find the total heat absorbed in joules (nearest integer).

Answer:

11085

Solution:

$Δ U = 0$ , so $Q = W$ for the isobaric step: $T$ goes $\frac{500}{3} \to 500$ K, $Δ T = 333.3$ K. $Q = 4 \times 8.314 \times 333.3 = 11085$ J.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Thermodynamics Laws & Specific Heats of Gases

⏱ 2mℹ️ Source: QB

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