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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB

PhysicsMediuminteger

Two moles of an ideal gas need 415 J of heat to raise the temperature by 10 K at constant pressure. Find the heat needed for the same rise at constant volume in joules ( $R = 8.3$ J $K^{- 1}$ $m o l^{- 1}$ ).

Answer:

249

Solution:

$C_{p} = \frac{415}{2 \times 10} = 20.75$ . $C_{v} = 20.75 - 8.3 = 12.45$ . $Q = 2 \times 12.45 \times 10 = 249$ J.

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

⏱ 2mℹ️ Source: QB

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