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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoThermodynamics Laws & Specific Heats of GasesMedium2 minQB

PhysicsMediumsingle choice

A vessel contains 0.5 $m^{3}$ of hydrogen gas at 300 K and pressure $1 0^{5}$ Pa. How much heat should be added to it to raise the temperature to 500 K? Molar specific heat of hydrogen is 5 cal/mol K:

Options:

Answer:

Solution:

$n = \frac{P V}{RT} = \frac{1 0 ^{5} \times 0.5}{8.314 \times 300} = 20.05$ mol. $Q = 20.05 \times 5 \times 200 = 20.05$ kcal, about 20 kcal. A.

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

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