4) A 810-g quantity of ethanol, in the liquid state at its melting point of -114°C, is frozen at atmospheric pressure. The heat of fusion of ethanol is 1.04 x 105 J/kg, the molecular mass is 46.1 g/mol, and the ideal gas constant is R = 8.314 J/(mol. K). The change in the entropy of the ethanol as it freezes is closest to A) -540 J/K; B) -490 J/K; C)-600 J/K; D) 490 J/K; E) 540 J/K. 5) Propane gas (C3H8) behaves like an ideal gas with y=1.127. Determine the molar heat capacity at constant pressure. A) 43.89 J/mol K; B) 57.185 J/mol K; C) 65.5 J/mol K; D) 73.8 J/mol K; E) 8.315 J/K.
4) A 810-g quantity of ethanol, in the liquid state at its melting point of -114°C, is frozen at atmospheric pressure. The heat of fusion of ethanol is 1.04 x 105 J/kg, the molecular mass is 46.1 g/mol, and the ideal gas constant is R = 8.314 J/(mol. K). The change in the entropy of the ethanol as it freezes is closest to A) -540 J/K; B) -490 J/K; C)-600 J/K; D) 490 J/K; E) 540 J/K. 5) Propane gas (C3H8) behaves like an ideal gas with y=1.127. Determine the molar heat capacity at constant pressure. A) 43.89 J/mol K; B) 57.185 J/mol K; C) 65.5 J/mol K; D) 73.8 J/mol K; E) 8.315 J/K.
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Chapter18: Thermodynamics And Equilibrium
Section: Chapter Questions
Problem 18.98QP: When 1.000 g of ethylene glycol, C2H6O2, is burned at 25C and 1.00 atmosphere pressure, H2O(l) and...
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![4) A 810-g quantity of ethanol, in the liquid state at its melting point of -114°C, is frozen at atmospheric
pressure. The heat of fusion of ethanol is 1.04 × 105 J/kg, the molecular mass is 46.1 g/mol, and the ideal
gas constant is R = 8.314 J/(mol. K). The change in the entropy of the ethanol as it freezes is closest to
A) -540 J/K; B) -490 J/K; C)-600 J/K; D) 490 J/K; E) 540 J/K.
5) Propane gas (C3H8) behaves like an ideal gas with y=1.127. Determine the molar heat capacity at
constant pressure.
A) 43.89 J/mol K; B) 57.185 J/mol K; C) 65.5 J/mol K; D) 73.8 J/mol K; E) 8.315 J/K.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6ff737fb-d689-45a6-8f07-a69ed38e9e58%2F20bb51f8-b95e-4c35-96c4-649033b31b55%2F3ypor5e_processed.png&w=3840&q=75)
Transcribed Image Text:4) A 810-g quantity of ethanol, in the liquid state at its melting point of -114°C, is frozen at atmospheric
pressure. The heat of fusion of ethanol is 1.04 × 105 J/kg, the molecular mass is 46.1 g/mol, and the ideal
gas constant is R = 8.314 J/(mol. K). The change in the entropy of the ethanol as it freezes is closest to
A) -540 J/K; B) -490 J/K; C)-600 J/K; D) 490 J/K; E) 540 J/K.
5) Propane gas (C3H8) behaves like an ideal gas with y=1.127. Determine the molar heat capacity at
constant pressure.
A) 43.89 J/mol K; B) 57.185 J/mol K; C) 65.5 J/mol K; D) 73.8 J/mol K; E) 8.315 J/K.
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