Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB

PhysicsMediuminteger

Nitrogen at standard conditions in a sealed vessel of volume 10 litres is cooled by 40 K. Find the heat lost by the gas in joules (nearest integer).

Answer:

371

Solution:

$n = \frac{10}{22.4} = 0.4464$ mol. The vessel is sealed, so $Q = Δ U = n C_{v} Δ T = 0.4464 \times \frac{5}{2} \times 8.314 \times 40 = 371$ J lost.

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

⏱ 2mℹ️ Source: QB

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