1. calculate the minimum amount of energy (per unit mass) that must be removed from a...
1. calculate the minimum amount of energy (per unit mass) that must be removed from a gallon of milk initially at 40F to cause it to freeze completely. Answer should be in BTU/lbm.
2. what is the percent error involved in treating saturated vapor water as an ideal gas when estimating its specific heat volume at T=243F?
Homework Answers
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1. calculate the minimum amount of energy (per unit mass) that
must be removed from a...
When 1.4 × 105J of energy is removed from 0.9 kg of water initially at 20...
When 1.4 × 105J of energy is removed from 0.9 kg of water initially at 20 ∘C will all the water freeze? The heat of fusion for water at 0 ∘C is Lf =3.35×105J/kg. The specific heat of water is c = 4180 J/kg⋅ ∘C. How much remains unfrozen?
a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow...
a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow rate is 1,000 cfm, the humidity ratio is 0.025 lbv/lba, and the dry air density is 0.072 Iba/ft3. b. Assume the above air enters an evaporator coil at 90°F where it is cooled in a constant humidity ratio process until reaching the 100 % RH curve ( the temperature at that point is the dew point. The air then keeps dropping in temperature, following...
please help me (Take home, Return the answer sheet on 1/6/2020) 1. (15%) Calculate the specific...
please help me
(Take home, Return the answer sheet on 1/6/2020) 1. (15%) Calculate the specific kinetic energy (J/kg) of water flowing through a pipe with an inner diameter of 5 cm at a rate of 10 m/s. 2. (15%) The calorific value of waste is 2,000 kcal/kg, and the efficiency of incineration power generation is 25%. How many kilowatt-hours can be generated by processing 1 metric ton of garbage? 3. (15%) What is intensive property? What is extensive property?...
1. Calculate the enthalpy change, ΔH, for the process in which 31.6 g of water is...
1. Calculate the enthalpy change, ΔH, for the process in which 31.6 g of water is converted from liquid at 0.4 ∘C to vapor at 25.0 ∘C . For water, ΔHvap = 44.0 kJ/mol at 25.0 ∘C and Cs = 4.18 J/(g⋅∘C) for H2O(l). 2. How many grams of ice at -16.2 ∘C can be completely converted to liquid at 10.2 ∘C if the available heat for this process is 4.27×103 kJ ? For ice, use a specific heat of 2.01...
90 Chapter 2 PROPERTIES OF SUBSTANCES for all Pages Due 03/19/2020 start b. x=0.2, P =...
90 Chapter 2 PROPERTIES OF SUBSTANCES for all Pages Due 03/19/2020 start b. x=0.2, P = 100 kPa C C c. P-2 MPa, T = 400°C 2-41) Calculate the mass of water contained in a 0.6-mº vessel under the following conditions: a. 100 kPa, 150°C b. 300 kPa, 600°C c. 50 kPa, 81°C d. 400 kPa, saturated vapor e. 400 kPa, saturated liquid f. At the critical state 2-42. Determine the internal energy of H.O at 10 MPa and 450°C....
Mass of Magnesium strip Use the length of your magnesium strip and the mass per m...
Mass of Magnesium strip Use the length of your magnesium strip and the mass per m provided by your TA to calculate the mass of your magnesium strip. Make sure to convert so that your units match! Mass of magnesium strip Moles of magnesium used Convert the mass of each magnesium strip into moles using the molar mass. Moles of magnesium Moles of hydrogen produced (n) Use the mole ratio from the balanced chemical equation to convert the moles magnesium...
1. Definitions. Fill in the blank with the LETTER of the most appropriate term from the...
1. Definitions. Fill in the blank with the LETTER of the most appropriate term from the following: A. Charles' Law B. neutralization C. heat of fusion D. Dalton's Law E. heat of vaporization F. heat capacity (specific heat) G. evaporation H. condensation I. melting J. Boyle's Law K. ideal gas law L. pressure M.PH N. Arrhenius acid S. Arrhenius base T. kinetic molecular theory states that pressure and volume are inversely proportional states that volume and absolute temperature are directly...
Thermodynamics one pls clear hand writing thanks (i) Define pure substance and comprehensively describe the phase...
Thermodynamics one
pls clear hand writing
thanks
(i) Define pure substance and comprehensively describe the phase changes of a pure substance considering water as an example. Use diagrams to illustrate your understanding of this point.. (1 mark) (ii) The variations of properties during phase-change processes are best studied and understood with the help of property diagrams including the T-v, P-v, and P-T diagrams for pure substances. Taking water as an example, comprehensively sketch and discuss how these tables (1 mark)...
4. Comparison of process paths: Calculate the AH for 1 kg of water going from liquid...
4. Comparison of process paths: Calculate the AH for 1 kg of water going from liquid at the triple point of water (0.01 °C and 0.0061 bar) to saturated steam (100 °C, 1 atm) by two different process paths. The two paths are defined as a. liquid water at triple point to saturated vapor at the triple point, followed by heating the saturated vapor to 0.0061 bar to saturated vapor at 1 atm. b. liquid water at triple point heated...
a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow rate is 1,000 cfm, the humidity ratio is 0.025 lbv/lba, and the dry air density is 0.072 Iba/ft3. b. Assume the above air enters an evaporator coil at 90°F where it is cooled in a constant humidity ratio process until reaching the 100 % RH curve ( the temperature at that point is the dew point. The air then keeps dropping in temperature, following...
please help me
(Take home, Return the answer sheet on 1/6/2020) 1. (15%) Calculate the specific kinetic energy (J/kg) of water flowing through a pipe with an inner diameter of 5 cm at a rate of 10 m/s. 2. (15%) The calorific value of waste is 2,000 kcal/kg, and the efficiency of incineration power generation is 25%. How many kilowatt-hours can be generated by processing 1 metric ton of garbage? 3. (15%) What is intensive property? What is extensive property?...
90 Chapter 2 PROPERTIES OF SUBSTANCES for all Pages Due 03/19/2020 start b. x=0.2, P = 100 kPa C C c. P-2 MPa, T = 400°C 2-41) Calculate the mass of water contained in a 0.6-mº vessel under the following conditions: a. 100 kPa, 150°C b. 300 kPa, 600°C c. 50 kPa, 81°C d. 400 kPa, saturated vapor e. 400 kPa, saturated liquid f. At the critical state 2-42. Determine the internal energy of H.O at 10 MPa and 450°C....
Mass of Magnesium strip Use the length of your magnesium strip and the mass per m provided by your TA to calculate the mass of your magnesium strip. Make sure to convert so that your units match! Mass of magnesium strip Moles of magnesium used Convert the mass of each magnesium strip into moles using the molar mass. Moles of magnesium Moles of hydrogen produced (n) Use the mole ratio from the balanced chemical equation to convert the moles magnesium...
1. Definitions. Fill in the blank with the LETTER of the most appropriate term from the following: A. Charles' Law B. neutralization C. heat of fusion D. Dalton's Law E. heat of vaporization F. heat capacity (specific heat) G. evaporation H. condensation I. melting J. Boyle's Law K. ideal gas law L. pressure M.PH N. Arrhenius acid S. Arrhenius base T. kinetic molecular theory states that pressure and volume are inversely proportional states that volume and absolute temperature are directly...
Thermodynamics one
pls clear hand writing
thanks
(i) Define pure substance and comprehensively describe the phase changes of a pure substance considering water as an example. Use diagrams to illustrate your understanding of this point.. (1 mark) (ii) The variations of properties during phase-change processes are best studied and understood with the help of property diagrams including the T-v, P-v, and P-T diagrams for pure substances. Taking water as an example, comprehensively sketch and discuss how these tables (1 mark)...
4. Comparison of process paths: Calculate the AH for 1 kg of water going from liquid at the triple point of water (0.01 °C and 0.0061 bar) to saturated steam (100 °C, 1 atm) by two different process paths. The two paths are defined as a. liquid water at triple point to saturated vapor at the triple point, followed by heating the saturated vapor to 0.0061 bar to saturated vapor at 1 atm. b. liquid water at triple point heated...
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