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Newest Thermodynamics Questions

1. Predict whether each of the following processes increases or decreases entropy. Select the single best answer for each part.Cond
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2. The constant-pressure heat capacity of a sample of a perfect gas was found to vary with temperature according to the expression
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   2. asked by Davepee
   3. 71 views
3. A sample consisting of 2.00 mole of perfect gas molecules, for which Cv,m = R, initially at P1=111 kPa and T1= 277 K, is heated
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   2. asked by Davepee
   3. 83 views
4. Calculate the change in the internal energy of the system for a process in which the system absorbs 140J of heat from the
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5. Calculate w, q, change in H and change in S for an adiabatic reversible compression of 0.8g of a ideal gas ( molecular weight is
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   2. asked by Wesley
   3. 90 views
6. An ideal has ( Cp,m= 28.8 J/mol/k) is expanded reversibly and adiabatically from a volume of 2.0 dm-3 at a pressure of 4 ATM and
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   2. asked by Wesley
   3. 104 views
7. W17.The pV-diagram of figure below shows a series of thermodynamic processes.In process ab, 150J of heat is added to the system;
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   2. asked by Jeremiah latkuoth
   3. 174 views
8. The internal energy of a system increases by 36 joules. The system does work using 17 joules. What amount of heat was added to
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9. Two objects (A and B) of the same temperature are in contact with each other. Which statement is true?Question 2 options: Heat
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10. SynopsisEnergy is one of the great subject matters of our time, but what is energy actually? In this simulation you will learn
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11. SynopsisEnergy is one of the great subject matters of our time, but what is energy actually? In this simulation you will learn
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    2. 100 views
12. A system that can exchange energy with the surroundings but not matter.2. : A boiling pot of water with a lid on top. 3. A pan
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13. Why does convection occur?(1 point)Responses Heat increases the kinetic energy of molecules; the molecules have greater energy
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14. Simone has a mug of hot tea at a temperature of 90°C. She sets the mug on a counter in a room with an air temperature of 30°C.
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    2. asked by pt your not right gup
    3. 84 views
15. Which statement is true for two pieces of iron at the same temperature?Responses The total kinetic energy of their particles is
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16. What happens when two substances with different temperatures come into contact?(1 point)Responses Potential energy is
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    2. 102 views
17. Area TemperatureX. 22 Y. 18 Z. 18 Air will move from A. Area Y to area X B. Area Z to area Y C. Area X to area Z D. Area Y to
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    2. asked by Jozikee
    3. 45 views
18. Simone has a mug of hot tea at a temperature of 90°C. She sets the mug on a counter in a room with an air temperature of 30°C.
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    2. 201 views
19. A system releases 136 kJ of heat while 104 kJ of work is done on it. Calculate ΔE.
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20. A rigid container has an initial pressure of 1.50 atm at 21oC. What will the pressure be if the temperature is increased to
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    2. asked by Ariia
    3. 153 views
21. Question 21 to 22.Q21) Calculate the change in internal energy of a system that absorbs 10kJ of heat and does 2kJ of work. ( A)
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    2. asked by Abdulrazak umar Usman
    3. 68 views
22. An increase in thermal energy leads to _____(1 point)Responses an increase in heat and an increase in kinetic energy until a
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    2. 98 views
23. Rohan and his family are driving to South Padre Island for spring break. Rohan’s mom puts her closed Thermos full of coffee in
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    2. asked by boof
    3. 88 views
24. The standard reaction of enthalpy for the hydrogenation ofpropene, CH2CHCH3 (g) + H2 (g) → CH3CH2CH3 (g) is -124 kJ/mol. The
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    2. 100 views
25. A sample of nitrogen gas is at 37°C (99°F). If heat is removed from the sample, its temperature will _______, and it could
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    2. asked by mr. fox
    3. 98 views
26. At 100 degrees Celsius. Heat of vaporization is 40.66 kj/mol for water. Calculate the quantity of heat that is absorbed/released
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    2. asked by Nadia
    3. 99 views
27. A sample of nitrogen gas is at 37°C (99°F). If heat is removed from the sample, its temperature will _______, and it could
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    2. asked by r r
    3. 92 views
28. A sample of nitrogen gas is at 37°C (99°F). If heat is removed from the sample, its temperature will _______, and it could
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    2. asked by Dont worry abt my name
    3. 74 views
29. A steel casing weighing 2 kg has an initial temperature of 500°C;40 kg of water initially at 25°C is contained in a perfectly
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    2. 87 views
30. How much heat energy is released when a 500g sample of water vapor is cooled from 120°C to a finaltemperature of -20°C? [5T]
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    2. 100 views
31. An increase in thermal energy leads to _____(1 point)Responses an increase in heat and a decrease in kinetic energy until a
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    2. 84 views
32. n which case would the kinetic energy of particles be increasing? (1 point)Responses Metal is heated from room temperature to
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    2. 222 views
33. Find out how much heat is needed to be supplied to a gas at a pressure of 1.25×105 Pa, such that the pressure increases by 25
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    2. asked by LørdySmårt1SS
    3. 93 views
34. A student with a body temperature of 37°C holds a can of cold soda with a temperature of 18°C. The student is in a room with
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    2. asked by Dexter
    3. 94 views
35. A reversible engine take in heat from a reservoir of heat at 285°C, 35minute and give out heat to sink at 105°C, 18 minute.How
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    2. asked by Felix 300bc
    3. 116 views
36. Thermal energy is transferred to a substance. Which change can occur?(1 point)Responses The particles can gain potential and
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37. An aluminum block with a temperature of 300oC is placed into 200 milliliters of water with a temperature of 20oC. Which
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    2. asked by bryan arnett
    3. 116 views
38. An increase in thermal energy leads to ___1. An increase in heat and an increase in kinetic energy until a phase change occurs.
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    2. asked by ur mama
    3. 142 views
39. Given that R= 0.0821(L atm) / (mol K) how many moles must be in a 2L container at 1.8 atmospheres with a temperature of 270K?
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40. In a sealed bottle, the temperature is raised from 200 K to 400 K.What happens to the remaining quantities Pressure (P) Volume
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41. a T = 700K and P = 2 atm b T = 200K and P = 4 atm c T = 700K and P = 4 atm d T = 200 K and P = 2 atm
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42. The chart shows the specific heat capacities for four substances at 25°C.Substance Specific heat (J/g°C) air 1.020 copper
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43. Use the standard enthalpies of formation in the table below to determine the change in enthalpy for the reactions which follow
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    2. asked by -
    3. 119 views
44. A slice of cheese is 3.0°C and is sitting on a dish that is 3.0°C. If the dish and cheese are in a refrigerator that is set to
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    2. asked by shoto aizawa
    3. 255 views
45. A slice of cheese is 3.0°C and is sitting on a dish that is 3.0°C. If the dish and cheese are in a refrigerator that is set to
    1. 46 answers
    2. asked by help
    3. 282 views
46. A slice of cheese is 3.0°C and is sitting on a dish that is 3.0°C. If the dish and cheese are in a refrigerator that is set to
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47. Two gases A and B are separated by a partition. Gas A contracts, having 730j of work done on it. 140j of energy are transferred
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    2. asked by Nathaniel Benson
    3. 104 views
48. A gas is placed next to a reservoir of a higher temperature. The reservoir thus transfer 820kj of energy to the gas. 100kj of
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    2. asked by Nathaniel Benson
    3. 113 views
49. Two gases A and B are separated by a partition within a box. Gas B expands and move the partition, doing 200j of work on gas A.
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    2. asked by Nathaniel Benson
    3. 127 views
50. A refrigerator does 18 kJ of work while moving 115 kJ of thermal energy from inside the refrigerator. What is its coefficient of
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    2. 150 views