25. A tank contains 80 ft3 of air at a pressure of 350 psi. If the air is cooled until its pressure and temperature decrease to 200 psi and 70°F respectively, what is the decrease in internal energy?
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- 28. An air bubble rises from the bottom of a well where the temperature is 25°C, to the surface where the temperature is 27°C. Find the percent increase in the volume of the bubble if the depth of the well is 10m. Atmospheric pressure is 101, 528 Pa.1. Nitrogen at 200 psig is used to fill tank of 120 in³. The filling process is very slow and the contents of the tank attain 73°F. Find the mass of nitrogen, in Ib, inside the tank.3. A spaceship lands on a planet where the atmosphere is completely kgm, made of water (p = 1000 The ship sinks a total of 20m m- before reaching solid ground. How much pressure(kpa) is the ship m, experiencing if g = 20 →? 4. From #3, the ship was 1000 kgm when it left earth. How much does it weigh in N and kgf if it lands on solid ground in another planet with g = 20 ?
- It is said that independent temperatures are held at 273 K in a volume of 11.35 dm3, and its capacity of molar heat at 29.4 J K^-1 mol^-1 Cp. If the constant temperature 273 K is reversely compressed to it's half volume. d. How much heat does the system flow out e. Gas change in H?1. What is the mass of the air inside the classroom, which is 15m * 8m * 1.5m? The classroom conditions are 25℃. Find the mass of air inside (kg) at a pressure of 1 bar Compare the weight of the air in the classroom with the weight of a person.It is said that independent temperatures are held at 273 K in a volume of 11.35 dm3, and its capacity of molar heat at 29.4 J K^-1 mol^-1 Cp. If the constant temperature 273 K is reversely compressed to it’s half volume. a. What has changed with the U of the gas? b. What is the gas's final pressure. c. Compute the work done to it’s system? d. How much heat does the system flow out e. Gas change in H?
- Q1: If a calorimeter is not assumed to be adiabatic, how would one calculate the heat transfer? Guide Questions: What are the parameters to be considered and the equations to be used? What law of thermodynamics does this transfer of heat to the surroundings touch? Is an adiabatic system automatically considered as a closed system? Please help me understand by also attaching a reference/book/journal article. This would help me in my essay. Thank you.5. Two kilogram of certain gas with R = 0.218 kJ/kg-Kundergoes a process and results to the following changes: AH= 2190 kJ, AU = 1460 kl. D. What is the change in termperature?8. The specific volume of steam at atmospheric pressure and 212 deg. Fahrenheit is 26.80 ft3/lb. Find its density.
- II. Constant Volume Process Problem: 4000 gal/min of saturated steam at 3.0 MPa undergoes a constant volume process at until the pressure becomes 4.0 MPa. Determine the following: A. Specific volume, m³/kg B. Temperature at point 1 and 2, °C C. Mass of steam, kg/s D. Au (kJ/kg), Ah (kJ/kg), and As(kJ/(kg-K)) E. Q (kW) F. Pv and ts diagram5. A gas cylinder of volume 'V' and radius 'r' contains 1.00 mol He at a pressure PHe and 1.00 mol Ar at a pressure of PAr, and both are at a temperature T = 298.0K. At the top of the cylinder is a disc with a radius 'r' that is permeable to He but not Ar. The disc is pushed to the half volume mark. 1. How much work is required for this process to be conducted isothermally and reversibly? 2. How much does AG, AH and AS change for this process? Semi-permeable disc Ar Ar Не Не Volume = V V/2 V/2none m_cv2-m_cv1=m_in-m_out For ideal gases, .. is a function of temperature only specific volume none pressure density internal energy The quality of the fluid is 20%. Its internal energy at saturated liquid state is 200 3Jikg and saturated vapor state is 900 kJ/kg. Determine its internal energy?