The ideal gas heat capacity of nitrogen varies with temperature; it is C^*_p= 29.42-A. How much internal energy (per mole) must be added to nitrogen to increase its temperature from 450 K to 500 K at low pressure?

B. Repeat part A for an initial temperature of 273 K and a final temperature of 1073 K.

C. The Ideal gas heat capacity of nitrogen is sometimes roughly modeled as C^*_P = (7/2)R. How different would the answers be if you used that constant value for parts A and B?

Transcribed Image Text:

(2.170 x 10-³)T + (0.0582 x 10-5)7² + (1.305 x 10-8)73 - (0.823 x 10-¹)7¹, with T equal to the temperature in Kelvin and Cp is in J/mol K. .