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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesHard2 minQB

PhysicsHardnumerical

Find $c_{p}$ for a gaseous mixture of 14 g of nitrogen and 10 g of helium (ideal gases), in J $g^{- 1}$ $K^{- 1}$ (two decimals).

Answer:

2.77

Solution:

$n_{N_{2}} = 0.5$ mol, $n_{He} = 2.5$ mol. $C_{v} = 0.5 \times \frac{5}{2} R + 2.5 \times \frac{3}{2} R = 5 R$ . $C_{p} = C_{v} + (n_{1} + n_{2}) R = 8 R = 66.5$ J $K^{- 1}$ . $c_{p} = \frac{66.5}{24} = 2.77$ J $g^{- 1}$ $K^{- 1}$ .

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

⏱ 2mℹ️ Source: QB

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