Homework Answers
Energy, pressure, volume and temperate are all state function.
They do not depend on the path. They depend only on initial and final position.
Heat on the other hand depends on the path takes.
Answer: D
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Which of these is not a state function? A) energy B) pressure C) volume D) heat...
14. Which of the following is not a state function? a. Internal Energy b. Free Energy...
14. Which of the following is not a state function? a. Internal Energy b. Free Energy c. Enthalpy d. Entropy e. Heat 15. The second law of thermodynamics states that a. the entropy of a perfect crystal is zero at 0 K b. the entropy of the universe is constant. c. the energy of the universe is increasing. d. the entropy of the universe is increasing. e. the energy of the universe is constant. 16. Which of the following are...
1. In an isothermal process a. No heat exchange occurs b. Volume remains constant c. Pressure...
1. In an isothermal process a. No heat exchange occurs b. Volume remains constant c. Pressure remains constant d. Temperature remains constant 2. In an adiabatic process a. No heat exchange occurs b. Volume remains constant c. Pressure remains constant d. Temperature remains constant 3. If you try to cool your kitchen on a hot day by opening your refrigerator door, the temperature in your kitchen will a. Decrease b. Increase c. Remain unchanged 4. Entropy can be a. Both...
11. Which of the following is a state function? A) U B) H C) S D G E) Volume
11. Which of the following is a state function? A) U B) H C) S D G E) Volume
Which of the following is not considered a state function, but rather is associated with a...
Which of the following is not considered a state function, but rather is associated with a process or a flow? E, energy p. pressure T, temperature H, enthalpy q, heat
1a) Heat transfer is not a state function and as such it is path dependent. Consider...
1a)
Heat transfer is not a state function and as such it is path
dependent. Consider the solid "S" which undergoes sublimation by
the process S(s) →S(g). This process may proceed in two ways. In
one case, S sublimes in a container open to atmospheric pressure
(constant pressure). In the other case it sublimes in a stoppered
flask (constant volume). Which situation will result in the greater
energy transfer in the form of heat? Please explain your answer.
1b) Calculate...
Which of the following represent, respectively, conjugate intensive and extensive, properties? I . pressure, volume II. temperature,...
Which of the following represent, respectively, conjugate intensive and extensive, properties? I . pressure, volume II. temperature, heat III. chemical potential, Gibbs free energy A. I only B. III only C. I and II D. II and III E. I , II and III
There is a cylinder which contains 1 mole of ideal gas which initial pressure, volume, temperature...
There is a cylinder which contains 1 mole of ideal gas which initial pressure, volume, temperature is A, B, D. If heat(q) is injected to this cylinder, the pressure of gas changed into sqrt(2)R*A, the volume of gas changed into 2.5B, and the temperature of gas changed into 5*sqrt(R)*D. Calculate the heat in terms of A, B, D. (Molar heat capacity Cv=2R).
The state of an ideal gas can be represented by a point on a PV(pressure-volume)...
The state of an ideal gas can be represented by a point on a PV (pressure-volume) diagram. If you know the quantity of gas, n, a unique point in pressure (P) and volume (V) can be used to determine a temperature (T). Each point on a PV diagram also has a single internal energy (U) assigned to it. If a process starts at a point and returns to that same point on a PV diagram, it returns to the same...
Diesel Cycle a. The pressure and temperature at each state in this cycle. b. The compression ratio. c. The cutoff ratio. d. The thermal efficiency. e. The MEP (mean effective pressure.) Consider an a...
Diesel Cycle
a. The pressure and temperature at each state in this cycle.
b. The compression ratio.
c. The cutoff ratio.
d. The thermal efficiency.
e. The MEP (mean effective pressure.)
Consider an air-standard Diesel cycle (this means use variable specific heats). The inlet state to the compression process is at 95 kPa and 300 K. At the end of the heat addition process, the temperature is 2150 K and the pressure is 7200 kPa. Accounting for the variation of...
4. Consider a heat engine based on the Stirling cycle. Pressure Vs Volume V2 Steps 1-2...
4. Consider a heat engine based on the Stirling cycle. Pressure Vs Volume V2 Steps 1-2 and 3-4 are at constant temperature (1-2 at temperature TH and 3-4 at temperature To, and steps 4-1 and 2-3 are at constant volume (2-3 at volume V2, and 4-1 at volume V) a) Determine expressions for the heat and work in each step. b) Calculate an expression for the efficiency e of this heat engine as a function of TH TC, V2, Vi,...
14. Which of the following is not a state function? a. Internal Energy b. Free Energy c. Enthalpy d. Entropy e. Heat 15. The second law of thermodynamics states that a. the entropy of a perfect crystal is zero at 0 K b. the entropy of the universe is constant. c. the energy of the universe is increasing. d. the entropy of the universe is increasing. e. the energy of the universe is constant. 16. Which of the following are...
11. Which of the following is a state function? A) U B) H C) S D G E) Volume
Which of the following is not considered a state function, but rather is associated with a process or a flow? E, energy p. pressure T, temperature H, enthalpy q, heat
1a)
Heat transfer is not a state function and as such it is path
dependent. Consider the solid "S" which undergoes sublimation by
the process S(s) →S(g). This process may proceed in two ways. In
one case, S sublimes in a container open to atmospheric pressure
(constant pressure). In the other case it sublimes in a stoppered
flask (constant volume). Which situation will result in the greater
energy transfer in the form of heat? Please explain your answer.
1b) Calculate...
Diesel Cycle
a. The pressure and temperature at each state in this cycle.
b. The compression ratio.
c. The cutoff ratio.
d. The thermal efficiency.
e. The MEP (mean effective pressure.)
Consider an air-standard Diesel cycle (this means use variable specific heats). The inlet state to the compression process is at 95 kPa and 300 K. At the end of the heat addition process, the temperature is 2150 K and the pressure is 7200 kPa. Accounting for the variation of...
4. Consider a heat engine based on the Stirling cycle. Pressure Vs Volume V2 Steps 1-2 and 3-4 are at constant temperature (1-2 at temperature TH and 3-4 at temperature To, and steps 4-1 and 2-3 are at constant volume (2-3 at volume V2, and 4-1 at volume V) a) Determine expressions for the heat and work in each step. b) Calculate an expression for the efficiency e of this heat engine as a function of TH TC, V2, Vi,...
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