One mole of a van der Waals gas undergoes a reversible isothermal expansion from an initial molar volume Vi to a final molar volume Vf. By using the First TdS equation find out how much heat has been transferred during the process?
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Q.no.1
One mole of a van der Waals gas undergoes a reversible isothermal expansion
from an initial molar volume Vi to a final molar volume Vf. By using the First
TdS equation find out how much heat has been transferred during the process?
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- Q2 Help pleaseA cylinder contains 0.250 mol of carbon dioxide (CO₂) gas at a temperature of 27.0°C. The cylinder is provided with a frictionless piston, which maintains a constant pressure of 1.00 atm on the gas. The gas is heated until its temperature increases to 127.0°C. Assume that the CO₂ may be treated as an ideal gas. Part A How much work is done by the gas in this process? Express your answer in joules. — ΑΣΦ W = Submit Part B On what is this work done? The work is done on the piston. The work is done on the cylinder. Submit Part C Request Answ AU = What is the change in internal energy of the gas? Express your answer in joules. ΑΣΦ Submit Request Answer Request Answer P Pearson W ? ? J J1 kg of boiling water at a temperature of 109.3 degrees Celsius. The pressure is then doubled and the water evaporates at this new pressure to a degree of drought 0.9. By using a steam table. Determine: A. Pressure where evaporation B. The amount of heat that must be added before evaporation starts at a new temperature C. Wet steam enthalpy D. Wet steam entropy E. Wet vapor volume Note : picture 1 is pressure table, picture 2 is temperature table.
- I am doing some practice problems to prepare for an exam and i cannot solve this problem, specifically part a but I would like to check this problem A piston cylinder device contains 0.8 kg of air initially at 100 kPa, 27 °C. The air is now compressed slowly in a polytropic process during which PV^1.3 =constant, until the volume reaches 1/2 its original volume. The system is then heated at constant pressure until the volume gets back to its original value. NOTE: THIS IS NOT A CYCLE. Data: Rair = 0.287 kJ/kg K; Cv=0.731 kJ/kg K; Cp=1.018 kJ/kgK. a) Determine the amounts AND directions of the Work and Heat(each in kJ) for each of the two processes. show all work used to get your values. b) Sketch the two processes on a P-v diagram, clearly showing all three state points and the two processes with their directions.I need help with A and B for this problem. I want to see the detailed steps.Subject: physics