a. Make an estimate of u0 (in eV) for a water molecule in the liquid state at 100℃
a. Make an estimate of u0 (in eV) for a water molecule in the liquid state at 100℃. Assume that there are six degrees of freedom per molecule in both the liquid and the vapor states and that 2260 kJ of energy per kg are released when it condenses. Ignore any work done on the molecule due to the change in volume.
b. What is the average thermal energy per molecule?
c. What is the average total energy per molecule for liquid water at 100℃?
Homework Answers
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a. Make an estimate of u0 (in eV) for a water molecule in the liquid state at 100℃
Pleases help me thanks. 5 kg of liquid water at 100°C was converted to steam at...
Pleases help me thanks.
5 kg of liquid water at 100°C was converted to steam at 100°C by boiling at standard atmospheric pressure, in the arrangement of the figure below. The volume of the water changed from an initial value of 0.005 mº as a liquid to 8.355 mº as steam. Latent heat of vaporization for water Lv = 2256 kJ/kg. Standard atmospheric pressure is 1 atm or 1.01 x 109 Pa. Loaded Piston Steam Insulation Insulation Liquid water Thermal...
Must the amount of heat absorbed as 1 kg of saturated liquid water boils at 100...
Must the amount of heat absorbed as 1 kg of saturated liquid water boils at 100 °C, be equal to the amount of heat released as 1 kg of saturated water vapor condenses at 100 °C? Why? Which process requires more energy: completely vaporizing 1 kg of saturated liquid water at 1 atm pressure or completely vaporizing 1 kg of saturated liquid water at 8 atm pressure? Why? A food-scientist is cooking three identical beef stews in pans that are...
Estimate ωc for water molecules in liquid water at 17 ◦ C, given that m = 3.0 × 10−26 kg. Remembe...
Estimate ωc for water molecules in liquid water at 17 ◦ C, given that m = 3.0 × 10−26 kg. Remember that the number of states is VrVp/h^3. For an estimate of the accessible volume in momentum space, assume that the maximum magnitude of the momentum for any molecule is roughly equal to the root mean square value; most accessible states reside within a sphere of that radius in momentum space. Assume that any one molecule can go anywhere within...
A piston-cylinder device initially contains 1.78 kg saturated liquid water at 200°C. Now heat is transferred...
A piston-cylinder device initially contains 1.78 kg saturated liquid water at 200°C. Now heat is transferred to the water until the volume quadruples and the cylinder contains saturated vapor only. Determine (a) the final volume of the tank, m (Round to six decimal places.) (b) the final temperature and pressure, MPa and (c) the internal energy change of the water kJ 0 Water 1.78 kg 200 C
given 1 kilogram of liquid water is converted into steam at 100 degrees celcius at the...
given 1 kilogram of liquid water is converted into steam at 100
degrees celcius at the pressure of 1 atm. the initial liquid volume
of 1 e-3 m3 boils into a steam volume of 1.671 m3. find the
following calculations
exercise sheet4.pd e Gel Homework Help With Chey С ї https://moodle2.uni-Ieipzig.de/pluginfile.php/1237821/mod.resource/content/0/exercise-sheet4.pdf ::: Apps-tp4-Course Experiment. D math 4-ep3-Universität Leipzig-physics bu.edu/ du 四25 hostels around t E Klausur Cichos Ep3 2 F Raphy exercise_sheet4.pdf 1/2 Lead s Insulation Thermal teservoir cowvol kno...
2 kg Water in a vertical piston cylinder arrangement, is initially at saturated liquid state at...
2 kg Water in a vertical piston cylinder arrangement, is initially at saturated liquid state at 3 bar. It is heated and undergoes constant pressure expansion to a state of saturated vapor. What is the work done by the piston cylinder arrangement to the environment? Neglect the mass of the piston, piston friction, kinetic and potential energy changes. Hint: this is a closed system problem, remember control volume boundary work concept. What is the heat transfer into the water?
Given the following cases for water, designate the state as specifically as possible (e.g., 2-phase and...
Given the following cases for water, designate the state as specifically as possible (e.g., 2-phase and specify further if a saturated vapor or saturated liquid, superheated vapor, compressed liquid) of the water and find the other properties (pressure, temperature, specific volume, specific internal energy, quality) not given. Show your final answers in a table like the one listed below (a) P-1.5 bar, u-3000 kJ/kg (b) T 120 C, v 0.60 m/kg (c) P-3 bar, u 2543.6 kJ/kg (d) T-| 90°C,...
A 4-kW pump operating at steady state draws in liquid water at 100 kPa, 15?C with...
A 4-kW pump operating at steady state draws in liquid water at 100 kPa, 15?C with a mass flow rate of 4.5 kg/s and delivers water at 1 MPa pressure. Ignore the kinetic and potential energy changes from inlet to exit. Determine (a) the isentropic efficiency of the pump and (b) whether the power input rating is adequate
Ignore anything handwritten Problem 2 (50 points) A closed rigid tank contains of a two-phase liquid-vapor...
Ignore anything
handwritten
Problem 2 (50 points) A closed rigid tank contains of a two-phase liquid-vapor mixture of water, with a mass of 1 kg quality of x,-0.75, and a pressure of pi = 40 kPa (State 1 ). The system is heated in a constant- volume process till the pressure reaches p2-100 kPa (State 2) Sa) Determine the temperature, T, in "C, specific volume, Pi in m'/kg, and specific internal energy, ul, in kJ/kg at state 1; (12.5 points)...
nts) Calculate the change in internal energy during the conversi . (20 poi on of 2 kg of saturated liquid water to saturated vapor i 100 kPa? Assuming heat is added to the piston cylinder in the...
nts) Calculate the change in internal energy during the conversi . (20 poi on of 2 kg of saturated liquid water to saturated vapor i 100 kPa? Assuming heat is added to the piston cylinder in the process, what is the work performed by the piston (boundary work)? What is the required heat in if you assume a heat loss of 50 kJ during the process? Please show work using a T-v AND P-v diagram n a piston cylinder at...
Pleases help me thanks.
5 kg of liquid water at 100°C was converted to steam at 100°C by boiling at standard atmospheric pressure, in the arrangement of the figure below. The volume of the water changed from an initial value of 0.005 mº as a liquid to 8.355 mº as steam. Latent heat of vaporization for water Lv = 2256 kJ/kg. Standard atmospheric pressure is 1 atm or 1.01 x 109 Pa. Loaded Piston Steam Insulation Insulation Liquid water Thermal...
Must the amount of heat absorbed as 1 kg of saturated liquid water boils at 100 °C, be equal to the amount of heat released as 1 kg of saturated water vapor condenses at 100 °C? Why? Which process requires more energy: completely vaporizing 1 kg of saturated liquid water at 1 atm pressure or completely vaporizing 1 kg of saturated liquid water at 8 atm pressure? Why? A food-scientist is cooking three identical beef stews in pans that are...
A piston-cylinder device initially contains 1.78 kg saturated liquid water at 200°C. Now heat is transferred to the water until the volume quadruples and the cylinder contains saturated vapor only. Determine (a) the final volume of the tank, m (Round to six decimal places.) (b) the final temperature and pressure, MPa and (c) the internal energy change of the water kJ 0 Water 1.78 kg 200 C
given 1 kilogram of liquid water is converted into steam at 100
degrees celcius at the pressure of 1 atm. the initial liquid volume
of 1 e-3 m3 boils into a steam volume of 1.671 m3. find the
following calculations
exercise sheet4.pd e Gel Homework Help With Chey С ї https://moodle2.uni-Ieipzig.de/pluginfile.php/1237821/mod.resource/content/0/exercise-sheet4.pdf ::: Apps-tp4-Course Experiment. D math 4-ep3-Universität Leipzig-physics bu.edu/ du 四25 hostels around t E Klausur Cichos Ep3 2 F Raphy exercise_sheet4.pdf 1/2 Lead s Insulation Thermal teservoir cowvol kno...
2 kg Water in a vertical piston cylinder arrangement, is initially at saturated liquid state at 3 bar. It is heated and undergoes constant pressure expansion to a state of saturated vapor. What is the work done by the piston cylinder arrangement to the environment? Neglect the mass of the piston, piston friction, kinetic and potential energy changes. Hint: this is a closed system problem, remember control volume boundary work concept. What is the heat transfer into the water?
Given the following cases for water, designate the state as specifically as possible (e.g., 2-phase and specify further if a saturated vapor or saturated liquid, superheated vapor, compressed liquid) of the water and find the other properties (pressure, temperature, specific volume, specific internal energy, quality) not given. Show your final answers in a table like the one listed below (a) P-1.5 bar, u-3000 kJ/kg (b) T 120 C, v 0.60 m/kg (c) P-3 bar, u 2543.6 kJ/kg (d) T-| 90°C,...
Ignore anything
handwritten
Problem 2 (50 points) A closed rigid tank contains of a two-phase liquid-vapor mixture of water, with a mass of 1 kg quality of x,-0.75, and a pressure of pi = 40 kPa (State 1 ). The system is heated in a constant- volume process till the pressure reaches p2-100 kPa (State 2) Sa) Determine the temperature, T, in "C, specific volume, Pi in m'/kg, and specific internal energy, ul, in kJ/kg at state 1; (12.5 points)...
nts) Calculate the change in internal energy during the conversi . (20 poi on of 2 kg of saturated liquid water to saturated vapor i 100 kPa? Assuming heat is added to the piston cylinder in the process, what is the work performed by the piston (boundary work)? What is the required heat in if you assume a heat loss of 50 kJ during the process? Please show work using a T-v AND P-v diagram n a piston cylinder at...
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