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1. When 2 moles of carbon dioxide is heated at a constant pressure of 2 atm,...
Question 2: (13 Marks) A quantity of carbon dioxide occupies a volume of 0.14 m'at 975...
Question 2: (13 Marks) A quantity of carbon dioxide occupies a volume of 0.14 m'at 975 kPa and 370 °C. It is heated at constant volume to a pressure of 4.2 MPa, after which it is expanded in an insulated cylinder to a pressure of 270 kPa. Sketch these processes on a P-V diagram. Assuming Cp = 1.075 kJ/kg K for carbon dioxide, determine: A. The temperature at the start of the expansion B. The volume after expansion C. The...
As 2 moles of sirenite is heated under a constant pressure of 1 atm it undergoes...
As 2 moles of sirenite is heated under a constant pressure of 1 atm it undergoes a solid phase transition, at a temperature of 750 K, from α-sirenite to β-sirenite. The molar specific heat capacity of sirenite varies with thermodynamic temperature, T, such that Cvm = 2.50 x 10-6 T 2 Jmol-1K-1. a) Calculate the entropy change of the sirenite between the transition temperature of 750 K and room temperature (300 K). b) By what factor does the number of...
A 21.8-L tank of carbon dioxide (CO22) is at a pressure of 9.28 atm and temperature...
A 21.8-L tank of carbon dioxide (CO22) is at a pressure of 9.28 atm and temperature of 19.4∘∘C. (a)Calculate the number of moles of gas in the tank. ______________ mol ( ± 0.02 mol) (b)Obtain the number of grams of carbon dioxide in the tank. Hint: You can obtain the molar mass of CO22 by adding the molar mass of C and twice the molar mass of O. The molar mass of an element is given on the periodic table...
Neon gas is heated from 298 K (1 atm pressure) to 500 K under the following...
Neon gas is heated from 298 K (1 atm pressure) to 500 K under the following conditions: (a) at constant volume; (b) at constant pressure. In each case, find the molar entropy of the gas in its final state (at 500 K) given that its standard molar entropy at 298 K is 146.33 J/mol K. Assume that neon is ideal gas.
Five moles of carbon dioxide (CO2), initially 3 atm and 300 K, is trapped inside a...
Five moles of carbon dioxide (CO2), initially 3 atm and 300 K, is trapped inside a piston-cylinder assembly. It is then allowed to expand against atmospheric pressure adiabatically. The constant- pressure heat capacity of CO2 is given by the following equation: p = 5.4574 (1.045 × 10-3)(T/K)-(1.157 × 105)(T/K)-2 (a) If we assume that the expansion is infinitely slow and quasi-static, calculate the final temperature and total volume of the carbon dioxide gas when it reaches 1 atm. Also calculate...
When the pressure P is constant at 1 atm, the melting point of Br_2 is T_m...
When the pressure P is constant at 1 atm, the melting point of Br_2 is T_m = 265.95 K and its boiling point is T_b = 331.85 K. Br_2 is therefore liquid at 298 K and 1 atm but it also has a finite vapor pressure hence the property of both liquid and gas Br_2 can be obtained at at 298 K and 1 atm. Using a DeHoff equation and the thermodynamic table on D2L calculate the absolute molar entropy...
A cylinder contains 0.250 mol of carbon dioxide (CO2) gas at a temperature of 27.0∘C. The...
A cylinder contains 0.250 mol of carbon dioxide (CO2) gas at a temperature of 27.0∘C. The cylinder is provided with a frictionless piston, which maintains a constant pressure of 1.00 atm on the gas. The gas is heated until its temperature increases to 127.0∘C. Assume that the CO2 may be treated as an ideal gas. How much work W is done by the gas in this process? What is the change in internal energy ΔU of the gas? How much...
1- A sample of carbon dioxide gas at a pressure of 1.03 atm and a temperature...
1- A sample of carbon dioxide gas at a pressure of 1.03 atm and a temperature of 210 °C, occupies a volume of 546 mL. If the gas is cooled at constant pressure until its volume is 443 mL, the temperature of the gas sample will be ______ °C. 2- A sample of nitrogen gas at a pressure of 831 mm Hg and a temperature of 81 °C, occupies a volume of 6.66 liters. If the gas is heated at...
One mole of methane gas (CH4) is heated isobarically at a pressure of 1 atm from...
One mole of methane gas (CH4) is heated isobarically at a pressure of 1 atm from 82.2 ° C to 211.9 ° C in a cylindrical piston device with condensed steam from saturated vapor to fully condensed at 250 ° C. a. If methane is considered an ideal gas, calculate ΔU, ΔH, ΔS, ΔG (in Joule) b. Calculate work (W) and heat involved (Q), (in Joule). c. Calculate the change in environment, and the total entropy generated by this process...
CHEM 2A Class Pack F18 25. Suppose a sample of carbon dioxide gas at 2.50 atm is heated from 293K to 425K. What is...
CHEM 2A Class Pack F18 25. Suppose a sample of carbon dioxide gas at 2.50 atm is heated from 293K to 425K. What is the new pressure of the gas? 26. What will be the final pressure of a 735mL sample of a gas at 795mmHg after it is expanded to 1.00L at constant temperature? 27. What volume will 22.5mL of hydrogen gas collected over water at 755.5mmHg and 26°C occupy at STP? iant nress
Question 2: (13 Marks) A quantity of carbon dioxide occupies a volume of 0.14 m'at 975 kPa and 370 °C. It is heated at constant volume to a pressure of 4.2 MPa, after which it is expanded in an insulated cylinder to a pressure of 270 kPa. Sketch these processes on a P-V diagram. Assuming Cp = 1.075 kJ/kg K for carbon dioxide, determine: A. The temperature at the start of the expansion B. The volume after expansion C. The...
Neon gas is heated from 298 K (1 atm pressure) to 500 K under the following conditions: (a) at constant volume; (b) at constant pressure. In each case, find the molar entropy of the gas in its final state (at 500 K) given that its standard molar entropy at 298 K is 146.33 J/mol K. Assume that neon is ideal gas.
Five moles of carbon dioxide (CO2), initially 3 atm and 300 K, is trapped inside a piston-cylinder assembly. It is then allowed to expand against atmospheric pressure adiabatically. The constant- pressure heat capacity of CO2 is given by the following equation: p = 5.4574 (1.045 × 10-3)(T/K)-(1.157 × 105)(T/K)-2 (a) If we assume that the expansion is infinitely slow and quasi-static, calculate the final temperature and total volume of the carbon dioxide gas when it reaches 1 atm. Also calculate...
When the pressure P is constant at 1 atm, the melting point of Br_2 is T_m = 265.95 K and its boiling point is T_b = 331.85 K. Br_2 is therefore liquid at 298 K and 1 atm but it also has a finite vapor pressure hence the property of both liquid and gas Br_2 can be obtained at at 298 K and 1 atm. Using a DeHoff equation and the thermodynamic table on D2L calculate the absolute molar entropy...
CHEM 2A Class Pack F18 25. Suppose a sample of carbon dioxide gas at 2.50 atm is heated from 293K to 425K. What is the new pressure of the gas? 26. What will be the final pressure of a 735mL sample of a gas at 795mmHg after it is expanded to 1.00L at constant temperature? 27. What volume will 22.5mL of hydrogen gas collected over water at 755.5mmHg and 26°C occupy at STP? iant nress
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