Transcription and Explanation:---**11.4** If 42.0 kJ of heat is added to a 32.0-g sample of liquid methane under 1 atm of pressure at a temperature of −170°C, what are the final state and temperature of the methane once the system equilibrates? Assume no heat is lost to the surroundings. The normal boiling point of methane is −161.5°C. The specific heats of liquid and gaseous methane are 3.48 and 2.22 J/g-K, respectively [find more in **Section 11.4**].---**Diagram Explanation:**- **Apparatus Description:** The diagram shows a cylindrical container with a piston at the top, maintaining a constant pressure of 1.00 atm on the contained sample.- **Initial Conditions:** Inside the container is 32.0 g of liquid methane at a temperature of −170°C.- **Heat Addition:** An arrow, labeled "42.0 kJ," points towards the container, indicating the heat supplied to the system.- **Additional Data Included:** - The enthalpy of vaporization, ΔHvap, is given as 8.20 kJ/mol. - The initial state temperature, \( T = -170°C \).This setup is used to determine how the provided heat energy affects the state (liquid or gas) and temperature of the methane once equilibrium is reached. The critical values needed to solve this problem (boiling point and specific heats) are also provided.

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Answered: 11.4 If 42.0 kJ of heat is added to a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Instructions: Show your entire solution. Indicate which table from the steam tables you utilized in your solution. 41.149 kg per second of water at 0.03398675 kbarg and internal energy of 15000 kW is heated at constant pressure to saturated vapor and further heated at constant volume process until the pressure is quadrupled. Determine the ratio of the heat added during the constant volume process to the heat added during the constant pressure process.
Part D and E SOLVE CAREFULLY PART D Using the P–v and T–s diagrams show that in the isobaric process the saturated vapor state can be reached for arbitrary initial steam quality x1 whereas in the isentropic process the saturated vapor state can be attained only for x1 above a certain threshold value. What is the phase description of water in the final state when the saturation line is reached from the initial state below the threshold value? PART E : Determine this threshold value of x1 for the isentropic process with the initial temperature T1 = 150°C.
18
Hi, pleass help me solve this problem. I need it asap. Thank you so much. *** A thermometer in a 10 x 8 x 4 m room reads 25°C and a humidistat reads the R. H. to be 33%. What mas of water vapor is in the room? Saturated air at 25°C contains 19.33 g h2O/m^3.
28. Each tank containing 8ft of Heptane and Hexane having a pressure and temperature of 78psia, 156°F and 69psia, 126°F is being separated by a separation valve. All separation valves have been opened at the same time. Determine the resulting temperature of the mixture. Assume specific heat ratio for both compounds is the same. a. 142.6719°F b. 141.5448°F c. 142.5552°F d. 142.1423°F
PROBLEM 2 In general, the disposal of hot streams to the environment is not a good a practice due to the risk of violating EPA regulations and also, it represents as waste of potential useful energy. For example, raising the temperature of lakes, rivers, and atmosphere have negative consequences on the ecosystems. In this problem, a gas stream at 500°C contains eight percent mole carbon monoxide and the balance carbon dioxide. Before disposing this gas mixture stream into the atmosphere, it makes sense to recover some of its energy first. To achieve this we will use a heat exchanger where the gas stream flows across the tubes. Water flows inside the tubes entering at 25°C and it is fed at a ratio of 0.2 mole water per mole of the hot gas. The water is heating to its boiling point forming saturated steam at five bar. The steam produced can be used for heating or power generation in the facilities or as the feed for another unit operation. You can assume that heat exchanger is thermally…
! Required information NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the hfg of refrigerant-134a at 20°F. Use data from the tables. The gas constant of refrigerant-134a is R= 0.01946 Btu/lbm.R. Consider Clapeyron-Clausius equation for calculations. The hfg of refrigerant-134a at 20°F is Btu/lbm.
For water, at 298.15 K and 20000 kPa, the isothermal compressibility is 4.325 x 10-7 kPa-1. At this temperature, Cy = 55.013 J· mol-1 . K-1 and Cp = 103.60 J· mol-1. K-1. What would be the isentropic compressibility for a liter of water at these conditions?
**100. Beginning with a pressure of 2.20 X 10° Pa and a volume of 6.34 × 10-3 m², an ideal monatomic gas (y =}) undergoes an adia- batic expansion such that its final pressure is 8.15 x 104 Pa. An alterna- tive process leading to the same final state begins with an isochoric cooling to the final pressure, followed by an isobaric expansion to the final volume. How much more work does the gas do in the adiabatic process than in the alternative process?
Question 1: The PV diagram shown below applies to 2.1 moles of an ideal diatomic gas. (a) (b) Calculate temperature at all points Calculate the heat transferred along paths AB, BC, CD and, DA. (atm) 40 A D V (m') 0.01 0.05 Question 2: Consider an engine with efficiency of 25%. How much must the temperature of the hot reservoir increase, so that the efficiency increases to 50%. The temperature of the cold reservoir remains at 5°C

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