1. A human body is: A) a closed system B) an adiabatic system C) an open system
ID: 845915 • Letter: 1
Question
1.
A human body is:
A) a closed system
B) an adiabatic system
C) an open system
2.
Temperature is:
A) a state variable
B) none of the above
C) a state function
3.
Pressure is:
A) an extensive property
B) an intensive property
C) a molar property
4.
In any thermodynamic equation you should use temperature in:
A) Celsius
B) Kelvin
C) Fahrenheit
5.
The bar is:
A) 10e0 MPa
B) 10e-1 MPa
C) 10e1 MPa
6.
Zero degrees Celsius is:
A) 373.15 K
B) 273.15 K
C) 298.15 K
7.
The temperature in Kelvin can be:
A) <0
B) =0
C) >0
8.
Zero degrees Fahrenheit is:
A) +17.8 C
B) 0.0 C
C) -17.8 C
9.
The molar volume is:
A) an intensive property
B) a molar property
C) an extensive property
10.
How many degrees of freedom does a system with 2 components and 2 phases have?
A) 1
B) 3
C) 4
D) 0
E) 2
11.
What is the critical point?
A) The point where liquid, solid and gas exists.
B) The point where a solid changes to a gas.
C) The point where you can no longer differentiate between liquid and gas.
12.
Is an ideal gas at low or high temperature and at low or high pressure?
A) High Temperature, High Pressure
B) Low Temperature, High Pressure
C) Low Temperature, Low Pressure
D) High Temperature, Low Pressure
13.
The temperature of boiling water inside of a pressure cooker would be ________ than boiling water in a open pot.
A) lower
B) the same
C) higher
14.
A closed tank contains a vapor-liquid mixture of steam at 45 bar with a liquid content of 25% by mass. The pressure is increased mechanically to 80 bar. What happens to the molar volume?
A) It goes up
B) It stays the same
C) It goes down
15.
A closed tank contains a vapor-liquid mixture of steam at 45 bar with a liquid content of 25% by mass. The pressure is increased mechanically to 80 bar. What happens to the temperature?
A) It goes up
B) It goes down
C) It stays the same
16.
Containers A and B both contain mixtures of gas and liquid water at 7 bar. Container A has 25% liquid by volume, whereas Container B has 25% liquid by mass. Which container has more liquid?
A) They are equal
B) Container B
C) Container A
17.
A closed tank contains a vapor-liquid mixture of steam at 45 bar with a liquid content of 25% by mass. The pressure is increased mechanically to 80 bar. What happens to the molar volume?
A) It goes down
B) It stays the same
C) It goes up
18.
A closed tank contains a vapor-liquid mixture of steam at 45 bar with a liquid content of 25% by mass. The pressure is increased mechanically to 80 bar. What happens to the temperature?
A) It stays the same
B) It goes up
C) It goes down
19.
A tank contains a vapor-liquid mixture of steam at 45 bar. Steam is added to the tank that is at a different temperature and pressure. What remains constant after addition of the steam?
A) Energy
B) Mass
C) Temperature
D) Pressure
E) Total Volume
20.
A closed fixed tank contains a mixture of steam and water. Temperature is decreased. What happens to pressure?
A) It stays the same
B) It goes up
C) It goes down
21.
A closed fixed tank contains a mixture of steam and water. Temperature is decreased. The resulting tank has:
A) Only liquid
B) Cannot say from the given information
C) Only gas
D) A mixture of gas and liquid
22.
According to Gibbs Phase Rule, how many degrees of freedom are there for a pure substance at its boiling point?
A) 2
B) 1
C) 0
D) 3
23.
We remove energy from a superheated steam while maintaining the temperature constant at 150 C. We stop removing energy when it reaches its condensation point. Pressure:
A) Goes down
B) Goes up
C) Stays the same
24.
We remove energy from a superheated steam while maintaining the temperature constant at 150 C. We stop removing energy when it reaches its condensation point. Molar volume:
A) Goes down
B) Goes up
C) Stays the same
25.
Water is cooled from the critical point to a temperature which corresponds to a pressure of 10 bar. Determine the quality of the final state.
A) 99%
B) 10%
C) 90%
D) 1%
26.
Consider a system containing water at T=82 oC and V=0.200 m^3/kg, what is the quality of the system?
A) 61%
B) 6%
C) 39%
D) 94%
27.
A rigid container of volume 1m^3 contains saturated water at 2MPa. If the quality is 0.10, what is the volume occupied by the vapor?
A) 0.9m^3
B) 0.5m^3
C) 0.99m^3
D) 0.01m^3
E) 0.1m^3
28.
There will be two options for scheduling Midterm 1. The first is on 10/1 (W) during the normal class period. The second is the evening of 10/2 (Th) from 6-9 pM in 22 Deike. Although the exam will cover the same content during both of these time slots, the evening exam will allow for a 3 hour time slot to avoid a time pressure. Select which time you will take the exam. Your answer is non-binding, but intended for planning purposes. If you select the evening exam, please make arrangements with your work/study schedule now to avoid a conflict.
A) 10/2 (Th)Evening Exam, 6-9 PM; 22 Deike
B) 10/1 (W) during class period
29.
There will be two options for scheduling Midterm 2. The first is on 10/29 (W) during the normal class period. The second is the evening of 10/30 (Th) from 6-9 PM in 22 Deike. Although the exam will cover the same content during both of these time slots, the evening exam will allow for a 3 hour time slot to avoid a time pressure. Select which time you will take the exam. Your answer is non-binding, but intended for planning purposes. If you select the evening exam, please make arrangements with your work/study schedule now to avoid a conflict.
A) 10/29 (W) during the normal class period
B) 10/30 (Th) from 6-9 PM in 22 Deike
Explanation / Answer
1)A) a closed system
2)A) a state variable
3)inetensive peoperty
4)B) Kelvin
5)B) 10e-1 MPa
6)B) 273.15 K
7)C) >0
8)C) -17.8 C
9)C) an intensive property
10)A) 1
11)A) The point where liquid, solid and gas exists.
12)D) High Temperature, Low Pressure
13)A) lower
14)B) It stays the same
15)A) It goes up
16)A) They are equal
17)B) It stays the same
18)B) It goes up
19)A) Energy
20)C) It goes down
21)B) Cannot say from the given information
22)A) 2
23)A) Goes down
24)C) Stays the same
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.