One cubic metre of hydrogen at 0 ∘ C and 76 cm of Hg weighs 0.0896 kg. The specific heat capacities of hydrogen at constant pressure and volume are 3409 and 2411 cal per kg per kelvin. Calculate the v

Question

One cubic metre of hydrogen at 0 ∘ C and 76 cm of Hg weighs 0.0896 kg. The specific heat capacities of hydrogen at constant pressure and volume are 3409 and 2411 cal per kg per kelvin. Calculate the value of J . ( g = 9.81 m s − 2 , density of mercury 13.6 × 1 0 3 kg m − 3 )

TestHub · Accepted Answer

P = 0.76 × 13600 × 9.81 = 1.014 × 1 0 5 Pa. For 1 kg, r = ρT P ​ = 0.0896 × 273 1.014 × 1 0 5 ​ = 4145 J k g − 1 K − 1 . r = J ( c p ​ − c v ​ ) = J × 998 cal k g − 1 K − 1 , so J = 4.15 J c a l − 1 .

Physics - Heat & Thermo Question with Solution | TestHub

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