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Question 1 (22 pts) A. I set a glass of vodka (40% ethanol, 60% water, 25°C)...
1. (8 pts) Virtually every pchem textbook has a table of enthalpy values for 25°C. One...
1. (8 pts) Virtually every pchem textbook has a table of enthalpy values for 25°C. One use for these may be to calculate the enthalpy for a phase change such as compounds boil at 25°C. You are going to calculate the percent difference between the heat of vaporization of ethanol using data for 25°C and that at its boiling point of 78°C. boiling. However, not too many a) Write the chemical equation that shows the vaporization of 1 mol of...
I would really appreciate your help. God bless you Question 4 The molar enthalpy of fusion of ice at 0 °C and 1 atm...
I would really appreciate your help. God bless
you
Question 4 The molar enthalpy of fusion of ice at 0 °C and 1 atm pressure is 6024 J mol. The molar heat capacities at constant pressure of ice and water are 37.65 J Kmol and 75.30 J Kmol respectively, and may be taken as constant over the temperature range 0 to -20°C. Consider 2 mole of liquid water supercooled to -20 °C, which is allowed to freeze isothermally from liquid...
i am needing help with question 4 and 5. anything else helps Name Experiment 7 Calorimetry Postlab: Questions 25 points possible Section (day&time) Instructor Due date Answer the following qu...
i am needing help with question 4 and 5. anything else
helps
Name Experiment 7 Calorimetry Postlab: Questions 25 points possible Section (day&time) Instructor Due date Answer the following questions using complete sentences and support your answers with swers calculations, if desired. Attach additional pages as necessary. Handwritten or typed an are acceptable.(5 pts per question) 1. If som e of your hot metal remained in the test tube when it was transferred to the eter, would its calculated molar...
I NEED ABSOLUTELY CORRECT ANSWERS FOR THESE. 0.6 pts Question The city of Suburbia received a...
I NEED ABSOLUTELY CORRECT ANSWERS FOR THESE.
0.6 pts Question The city of Suburbia received a proposal for plant watering from Water Can Gardening Company. The company would water all city plants for $634 each quarter, increasing the amount charged by $17 each subsequent quarter. Water Can Gardening Company requires a 8-year commitment. The mayor has asked you to calculate the equivalent uniform quarterly cost for the plant water service to help with budgeting. Use a nominal annual interest rate...
please show all steps so I can fully understand the process of how to solve. thank you ! (16) It has been observed that 45% of young Canadians, under 25, play video games on a regular basis. You c...
please show all steps so I can fully understand the
process of how to solve. thank you !
(16) It has been observed that 45% of young Canadians, under 25, play video games on a regular basis. You choose a random sample of 8 persons in this age group. 2. (2) What probability distribution would be used to calculate probabilities in this example? State the formula -you do not need to repeat the formula in later parts. (4) State the...
i dont understand why the molecular weight i calculated (42.012 g/mol) for my unknown liquid (acetone)...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
(40 pts) Shell-and-Tube Heat Exchanger to make Jell-O Cups A counter-current shell-and-tube heat exchanger is used...
(40 pts) Shell-and-Tube Heat Exchanger to make Jell-O Cups A counter-current shell-and-tube heat exchanger is used to heat Jell-O solution (water + gelatin) using saturated steam on the shell side. Jell-O solution must be heated to at least 80 oC, poured into individual plastic cups, and then cooled to make the solid Jell-O cups. The Jell-O solution is heated with steam that enters the shell at 2.0 bar (Tsteam = 120oC) and exits as a saturated liquid. At this temperature...
how to find abs error of time 25 ? help me fill out the blanks and...
how to find abs error of time 25 ?
help me fill out the blanks and show calculation of F
centripetal...
Centripetal Force and Acceleration For a body in motion to ch force on a body is in the sa acceleration in that the speed i direction opposite to that of the velocit undergoing negative acceleration. In thes speed, not direction. In this lab we lo wdy in motion to change either its speed or direction, a force is required....
Question 1 Prior to 1886, Aluminum was rarer and more expensive than gold! It was in 1886, that brother and sister Charles Martin Hall and Julia Brainerd Hall discovered the electrolytic proc...
Question 1 Prior to 1886, Aluminum was rarer and more expensive than gold! It was in 1886, that brother and sister Charles Martin Hall and Julia Brainerd Hall discovered the electrolytic process that separated Aluminum from Aluminum Oxide ore. Today, over 41 million tons are processed for use in everything from beer cans to aircraft skins. a) How many coulombs of electricity must pass through the cell to produce 40.0 g of Aluminum (26.981539 g/mol)Fm an Ala(Soy), cap solution "....
1. Exhaust gas at 400 C and 1 bar from i engines flows at the rate...
1. Exhaust gas at 400 C and 1 bar from i engines flows at the rate of 125 mol s into a waste-heat boiler where saturated steam in generated at a pressure of 1200 kPa. Water enters the boiler at 20 C (Ta) and the exhaust gases are cooled to within 10°C of the steam temperature. The heat capacity of the exhaust gases is C/R-3.341.12x10 T/K. The steam flows into an adiabatic turbine and exhausts at a pressure of 25...
1. (8 pts) Virtually every pchem textbook has a table of enthalpy values for 25°C. One use for these may be to calculate the enthalpy for a phase change such as compounds boil at 25°C. You are going to calculate the percent difference between the heat of vaporization of ethanol using data for 25°C and that at its boiling point of 78°C. boiling. However, not too many a) Write the chemical equation that shows the vaporization of 1 mol of...
I would really appreciate your help. God bless
you
Question 4 The molar enthalpy of fusion of ice at 0 °C and 1 atm pressure is 6024 J mol. The molar heat capacities at constant pressure of ice and water are 37.65 J Kmol and 75.30 J Kmol respectively, and may be taken as constant over the temperature range 0 to -20°C. Consider 2 mole of liquid water supercooled to -20 °C, which is allowed to freeze isothermally from liquid...
i am needing help with question 4 and 5. anything else
helps
Name Experiment 7 Calorimetry Postlab: Questions 25 points possible Section (day&time) Instructor Due date Answer the following questions using complete sentences and support your answers with swers calculations, if desired. Attach additional pages as necessary. Handwritten or typed an are acceptable.(5 pts per question) 1. If som e of your hot metal remained in the test tube when it was transferred to the eter, would its calculated molar...
I NEED ABSOLUTELY CORRECT ANSWERS FOR THESE.
0.6 pts Question The city of Suburbia received a proposal for plant watering from Water Can Gardening Company. The company would water all city plants for $634 each quarter, increasing the amount charged by $17 each subsequent quarter. Water Can Gardening Company requires a 8-year commitment. The mayor has asked you to calculate the equivalent uniform quarterly cost for the plant water service to help with budgeting. Use a nominal annual interest rate...
please show all steps so I can fully understand the
process of how to solve. thank you !
(16) It has been observed that 45% of young Canadians, under 25, play video games on a regular basis. You choose a random sample of 8 persons in this age group. 2. (2) What probability distribution would be used to calculate probabilities in this example? State the formula -you do not need to repeat the formula in later parts. (4) State the...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
how to find abs error of time 25 ?
help me fill out the blanks and show calculation of F
centripetal...
Centripetal Force and Acceleration For a body in motion to ch force on a body is in the sa acceleration in that the speed i direction opposite to that of the velocit undergoing negative acceleration. In thes speed, not direction. In this lab we lo wdy in motion to change either its speed or direction, a force is required....
Question 1 Prior to 1886, Aluminum was rarer and more expensive than gold! It was in 1886, that brother and sister Charles Martin Hall and Julia Brainerd Hall discovered the electrolytic process that separated Aluminum from Aluminum Oxide ore. Today, over 41 million tons are processed for use in everything from beer cans to aircraft skins. a) How many coulombs of electricity must pass through the cell to produce 40.0 g of Aluminum (26.981539 g/mol)Fm an Ala(Soy), cap solution "....
1. Exhaust gas at 400 C and 1 bar from i engines flows at the rate of 125 mol s into a waste-heat boiler where saturated steam in generated at a pressure of 1200 kPa. Water enters the boiler at 20 C (Ta) and the exhaust gases are cooled to within 10°C of the steam temperature. The heat capacity of the exhaust gases is C/R-3.341.12x10 T/K. The steam flows into an adiabatic turbine and exhausts at a pressure of 25...
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