16. Calculate the internal energy of combustion per unit mass for gaseous propane,C3Hs, at 25°C with the H₂O of combustion in the liquid phase from thecorresponding value of Ah = -50 360 kJ/kg.(-50 191 kJ/kg)17

The combustion of propane as follows: C3H8g + 5O2g → 3CO2g +4H2Ol One mole of gaseous propane reacts…

Answered: Calculate the internal energy of…

Introduction to Chemical Engineering Thermodynamics

8th Edition

ISBN:9781259696527

Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart

Chapter1: Introduction

Section: Chapter Questions

Problem 1.1P

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Q3: Air at 15°C and 1.05 bar occupies 0.02 m³. The air is heated at constant volume until the pressure is 4.2 bar, and then cooled at a constant pressure until the temperature become 250°C. Sketch the T-S diagram for the processes and calculate the net heat supplied to or from the air and the net of entropy change, Assume air to be a perfect gas.
Q3: Air at 15°C and 1.05 bar occupies 0.02 m³. The air is heated at constant volume until the pressure is 4.2 bar, and then cooled at a constant pressure until the temperature become 250°C. Sketch the T-S diagram for the processes and calculate the net heat supplied to or from the air and the net of entropy change, Assume air to be a perfect gas.
Argon (ideal gas) is contained in a piston-cylinder arrangement at a temperature of 120 °C and a pressure of 250 kPa. The initial volume is 1 m³. A polytropic process takes the argon to a pressure of 450 kPa and a temperature of 160.4644°C. Calculate the heat transfer during the process, in kJ.
Propane gas enters a heat exchanger at 50 °C and 300 kPa and exits at 280 °C under adiabatic condition continuously. Another stream of superheated steam enters the exchanger by flowing countercurrently to the propane at 350 °C and 4 bar and exits as a saturated liquid at the same pressure. (a) Prepare a process flowchart by taking 120 mol of propane fed to the exchanger as basis. Include the labeling of volume of propane and steam fed (m³), and mass of steam fed (kg) in the flowchart. (b) Calculate values of the labeled specified enthalpies as tabulated in the following inlet-outlet enthalpy table. Species C3H8 H₂O References: H₂O (1, 0.01 °C), C3H8 (g, 50 °C) Ain nout Ĥ₁ (kJ/mol) A₂ (kJ/kg) 120 mol mw (kg) 120 mol mw (kg) A out ĤI3 (kJ/mol) A₁ (kJ/kg) (c) Calculate the mass feed rate of steam and volumetric feed ratio of the two streams (m³ steam fed/m³ propane fed). Assume that propane is with ideal gas behavior but not the steam. (d) Calculate the heat transferred from water to…
Thermodynamics question
Please put a process or flow diagram
Consider a rigid container with 2 moles of an ideal gas initially at 8 bar and 337 o How much heat needs to be removed to bring the pressure in the chamber to 1 bar? Calculate also the W, DU and DH during the process. Assume a constant heat capacity at constant pressure (Cp =7R/2). Follow the guide below:
a. Using Raoult’s law, calculate and plot the x-y data at a total pressure of 101.32 kPa. b. Plot the boiling-point diagram.
A metal container has a volume of 188 m3. It is filled with nitrogen at 29°C and atmospheric pressure. If the container valve is opened and the container heated to 209°C, calculate the fraction of the nitrogen which leaves the container.
Steam at 0.9 MPa and dryness fraction 0.86 expands in a cylinder behind a piston isothermally and reversibly to a pressure of 0.05 MPa and temperature of 250°C. Calculate: 3.1. Change of internal energy. 3.2. Change of enthalpy per kg of steam. 3.3. Change of entropy. 3.4. The heat supplied during the process is found to be 560 kJ/kg, calculate the work done per kilogram of steam.
QI: A piston-cylinder device contains 1 kg of nitrogen at 100 kPa and 25°C. Now the nitrogen is heated at constant pressure to 90 °C. Calculate the specific volume change using ideal gas law and the compressibility chart. R = 0.2986 kPa-m' /kg K T 126.2 K, P= 3.39 MPa
13 An ideal solution of 5.25 moles of benzene and 3.0 moles of toluene is placed in a piston and cylinder assembly. At 298 K, the vapor pressure of pure substances are P°(benzene) = 96.4 torr & P°(toluene) = 28.9 torr. The vapor pressure of the solution is; 69.81 torr O 71.83 torr 53.47 torr O 66.61 torr 67.50 torr

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Calculate the internal energy of combustion per unit mass for gaseous propane, C3H8, at 25°C with the H₂O of combustion in the liquid phase from the corresponding value of Ah = -50 360 kJ/kg. (-50 191 kJ/kg)