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Determine the internal energy change Δu of hydrogen, in kJ/kg, as it is heated from 500 to 700 K, using (a) the empirical specific heat equation as a function of temperature, (b) the value at the average temperature, and (c) the value at room temperature.

Respuesta :

niniabesadze
U=3/2 RT

T=700-500=200K
R(is a constant)=8.314J/(mol*K)
U=3/2 *8.314*200=2494.2 J/mol
We need to convert mol to kg

n=m/M for hydrogen M=2
U=2494.2*2=4988.4 J/g=4988.4 kj/kg

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