5. In the following take Cv = 20.8 and Cp = 29.1 J/mol-°C for nitrogen gas. (a) Three moles of nitrogen at 30 °C, contained in a rigid vessel, is heated to 250 °C. How much heat is required if the vessel has a negligible heat capacity? If the vessel weighs 100 kg and has a heat capacity of 0.5 kJ/kg-°C, how much heat is required? (b) Four moles of nitrogen at 200 °C is contained in a piston/cylinder arrangement. How much heat must be extracted from this system, which is kept at constant pressure, to cool it to 40 °C if the heat capacity of the piston and cylinder is neglected? %3D
5. In the following take Cv = 20.8 and Cp = 29.1 J/mol-°C for nitrogen gas. (a) Three moles of nitrogen at 30 °C, contained in a rigid vessel, is heated to 250 °C. How much heat is required if the vessel has a negligible heat capacity? If the vessel weighs 100 kg and has a heat capacity of 0.5 kJ/kg-°C, how much heat is required? (b) Four moles of nitrogen at 200 °C is contained in a piston/cylinder arrangement. How much heat must be extracted from this system, which is kept at constant pressure, to cool it to 40 °C if the heat capacity of the piston and cylinder is neglected? %3D
Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter7: Chemical Energy
Section: Chapter Questions
Problem 60E: In a coffee-cup calorimeter, 100.0 mL of 1.0 M NaOH and 100.0 mL of 1.0 M HCI are mixed. Both...
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Transcribed Image Text:5. In the following take Cv = 20.8 and Cp = 29.1 J/mol-°C for nitrogen gas. (a)
Three moles of nitrogen at 30 °C, contained in a rigid vessel, is heated to 250 °C.
How much heat is required if the vessel has a negligible heat capacity? If the
vessel weighs 100 kg and has a heat capacity of 0.5 kJ/kg-°C, how much heat
is required? (b) Four moles of nitrogen at 200 °C is contained in a
piston/cylinder arrangement. How much heat must be extracted from this
system, which is kept at constant pressure, to cool it to 40 °C if the heat
capacity of the piston and cylinder is neglected?
%3D
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