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Newest Heat Transfer Questions

1. W17.The pV-diagram of figure below shows a series of thermodynamic processes.In process ab, 150J of heat is added to the system;
   1. 1 answer
   2. asked by Jeremiah latkuoth
   3. 273 views
2. 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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   2. 159 views
3. Why does convection occur?(1 point)Responses Heat increases the kinetic energy of molecules; the molecules have greater energy
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   2. 142 views
4. 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. 173 views
5. What happens when two substances with different temperatures come into contact?(1 point)Responses Potential energy is
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   2. 190 views
6. 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. 139 views
7. 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.
   1. 1 answer
   2. 288 views
8. 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. 185 views
9. At 100 degrees Celsius. Heat of vaporization is 40.66 kj/mol for water. Calculate the quantity of heat that is absorbed/released
   1. 1 answer
   2. asked by Nadia
   3. 208 views
10. 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. 176 views
11. 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. 191 views
12. 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. 170 views
13. 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. 314 views
14. 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
    1. 1 answer
    2. asked by Dexter
    3. 188 views
15. 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. 208 views
16. 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. 209 views
17. 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. 15 answers
    2. asked by shoto aizawa
    3. 339 views
18. 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. 367 views
19. 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. 72 answers
    2. 623 views
20. Two gases A and B are separated by a partition within a box. Gas A contract having 730j of work done on it . 140 of energy are
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    2. 134 views
21. A 108 mL gas sample has a mass of 77.96 mg at a pressure of 1140 mmHg and a temperature of 183 °C. Assume ideal gas behavior
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    2. 182 views
22. A heat engine operates between two thermal reservoirs at 800 and 20"C. One-half of the work output of the heat engine is used to
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    2. 209 views
23. An aluminum rod 0.500 m in length and with a cross-sectional area of 2.50 cm^2 is inserted into a thermally insulated vessel
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    2. 136 views
24. An aluminum rod 0.500 m in length and with a cross-sectional area of 2.50 cm^2 is inserted into a thermally insulated vessel
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    2. 120 views
25. A partition through which heat can pass from one system to another is said to beSelect one: isochoric diathermic isothermal
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    2. 358 views
26. A solid object at 30°C is placed inside a container of liquid at 60°C.What most likely will be observed? a The temperature of
    1. 1 answer
    2. asked by dv
    3. 209 views
27. What happens when two substances with different temperatures come into contact?(1 point)Responses Potential energy is
    1. 1 answer
    2. asked by Amelia
    3. 368 views
28. A 2.8 kg sample of a metal with a specific heat of 0.43KJ/kg°C is heated to 100.0°C then placed in a 50.0 g sample of water at
    1. 1 answer
    2. asked by Beatrice
    3. 254 views
29. An increase in thermal energy leads to _____1. a decrease in heat and an increase in kinetic energy until a phase change occurs.
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    2. asked by Seth
    3. 292 views
30. How much heat in calories would have to be added to 82 g of ice, initially at a temperature of -26°C to melt it completely(i.e.
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    2. asked by Jerome
    3. 312 views
31. A two-liter pot of tea at 85°C has _____ than a one-liter pot of tea at 85°C.more thermal energy more heat faster-moving
    1. 1 answer
    2. asked by me
    3. 438 views
32. Water at 2.5 MPa and 200°C is heated at constant temperature up to a quality of 80%. Find (a) the quantity of heat received by
    1. 1 answer
    2. asked by kuletsky
    3. 696 views
33. A 1-kg steam-water mixture at 1.0 Mpa is contained in an inflexible tank. Heat is added until the pressure rises to 3.5 Mpa and
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    2. asked by kuletsky
    3. 500 views
34. calculate the heat required to change 0.50kilogram of water at 40°celcius to steam at 100°celcius.(take latent heat of
    1. 5 answers
    2. asked by Benjamin
    3. 1,275 views
35. If you had 95 g of Aluminum at 98°C and dropped it into a 51 ml of water at 22°C, what'll the final temperature be? The
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    2. asked by Greg
    3. 202 views
36. The molar heat of fusion of water is 6010J/mol.calculate the entropy change for the ice to water transition at 0degre.Deduce the
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    2. asked by Mobange
    3. 563 views
37. A 250-g sample of water at 20.0C is placed in a freezer that is held at a constant temperature of -20.0C. Considering the water
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    2. asked by Annyeong
    3. 675 views
38. Suppose that the amount of heat removed when 13.8 kg of water freezes at 0.0 °C were removed from ethyl alcohol at its
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    2. asked by koketso
    3. 340 views
39. Suppose that the amount of heat removed when 42.1 kg of water freezes at 0.0 °C were removed from ethyl alcohol at its
    1. 1 answer
    2. asked by John
    3. 645 views
40. The melting point of a solid is 90.0ºC. What is the heat required to change 2.5 kg of this solid at 30.0ºC to a liquid? The
    1. 3 answers
    2. asked by f1
    3. 994 views
41. A cylinder and piston assembly (defined as the system) is warmed by an external flame. The contents of the cylinder expand,
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    2. asked by Student
    3. 1,781 views
42. Please Help me work out his problem please and thank you.In an electric freezer, 401.0 g of water at 18.5°C is cooled, frozen,
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    2. asked by tomi
    3. 320 views
43. What is specific latent heat of vporization and specific latent heat of fusion? An electrical kettle with a 2.0kW. heating
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    2. asked by Jennifer
    3. 407 views
44. A piece of copper ball of mass 20g at 200°is place in a copper calorimeter of 60g containing 50g of water at 39°.ignoring heat
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    2. asked by Favour
    3. 640 views
45. How much heat has to be added to change 0.500 kg ice from -10C completely to a steam of 110C. The specific heat of ice, water
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    2. asked by idk
    3. 759 views
46. A student drops a 0.33-kg piece of steel at 42 ∘C into a container of water at 22 ∘C. The student also drops a 0.51-kg chunk
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    2. asked by Lisa
    3. 556 views
47. The temperature of piece of copper of mass 250g is raised to 100% and is then transferred to well lagged aluminum can mass 10g
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    2. asked by HUDSON
    3. 1,323 views
48. Five kilograms of water at 40◦C is poured on a large block of ice at 0◦C. How much(in Kg) ice melts ?Hf = 335 kJ/kg cw =
    1. 3 answers
    2. asked by hjjj
    3. 4,484 views
49. How much heat is contained in 100 kg of water at 60.0 °C? (Hint: A substance at absolute zero, -273o C, has 0 heat content.)
    1. 1 answer
    2. asked by hista
    3. 892 views
50. What is the entropy change of 0.6kg of steam at 1atm pressure and 100oC, when it condenses to 0.6kg of water at 100oC?PLS HELP
    1. 1 answer
    2. asked by JAMYANG
    3. 841 views
51. Initial temperature hot tea 52° C,Final temperature after adding milk 39° C. Initial temperature of cold milk is 19° C
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    2. asked by Ana
    3. 559 views
52. Find out the amount of heat required to convert 1 gm of ice at -30 ⁰C to 1 gm of steam at 120⁰C. Given the specific heat of
    1. 2 answers
    2. asked by Abir
    3. 1,206 views
53. Initial temperature hot tea 52° C,Final temperature after adding milk 39° C. Initial temperature of cold milk is 19° C
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    2. asked by Ana
    3. 719 views
54. When does H2O absorb heat without changing temperature?a)When it is ice (in its solid phase) b)When it is melting c)When it is
    1. 1 answer
    2. asked by Ana
    3. 666 views
55. A) How much energy is released when 25.0 g of steam condense to liquid H2O at 100°C?B) If it takes 1215J of heat to raise the
    1. 1 answer
    2. asked by juju
    3. 2,347 views
56. 10g of ice at 273K is added to 20 g of water at 900 C in an insulated flask. The heat of fusion of ice is 6 Kj/mol and the
    1. 1 answer
    2. asked by FRANK
    3. 928 views
57. A 226 g sample of brass at 105◦C is placed ina calorimeter cup that contains 283 g of water at 29◦C. If you disregard the
    1. 1 answer
    2. asked by Vienna
    3. 1,019 views
58. A mass M of solid metal at temperature T is put into 3.0kg of waterwhich is initially at 90◦C. The metal and water are placed
    1. 1 answer
    2. asked by Cassidy
    3. 565 views
59. How much heat (energy) is required to convert 18.0 g (1.00 mole) of ice at -5.00oC to steamat a temperature 111oC? (6)
    1. 2 answers
    2. asked by X
    3. 829 views
60. A piece of copper block of mass 24g at 230 degree celsius is placed in a copper calorimeter of mass 60g containing 54g of water
    1. 5 answers
    2. asked by Richard
    3. 1,954 views
61. 1. A 0.400 kg sample of aluminum (c = 9.20 x 102 J/kg°C) at 95.0 °C is dropped into a 0.550 kg pot of water which is at 18.0
    1. 2 answers
    2. asked by anonymous
    3. 2,812 views
62. A silver block, initially at 59.8 ∘C, is submerged into 100.0 g of water at 24.6 ∘C, in an insulated container. The final
    1. 2 answers
    2. asked by just need help
    3. 939 views
63. The enthalpy of fusion of ice is 6.020 kJ/mol. The heat capacity of liquid water is 75.4 J/mol degrees Celsius. What is the
    1. 2 answers
    2. asked by maath
    3. 5,232 views
64. Heat of 30 kcal is supplied to a system and 4200 J of external work is done on the system so that its volume decreases at
    1. 1 answer
    2. asked by Chinagodaba
    3. 927 views
65. Find the amount of heat to be released to convert 40 grams of steam at 108°C to ice at -7°C. The latent heat of fusion and the
    1. 0 answers
    2. asked by Anonymous
    3. 950 views
66. The avg moler heat capacities of ice and water are 37.8 and 75.6jmol-1 respectively and the enthalpy of fusion of ice is
    1. 1 answer
    2. asked by Akanksha
    3. 1,661 views
67. If 0.022 kg of ice at 0C is added to 0.450 kg of water at 80C, what is the final temperature. (Assume that there is no heat lost
    1. 1 answer
    2. asked by Rilwan
    3. 755 views
68. A piece of copper of mass 300 g at a temperature of 950 degree Celsius is quickly transferred to a vessel of negligible thermal
    1. 9 answers
    2. asked by rita
    3. 6,179 views
69. Pls help pls help me solve. Dry steam at 100 degree Celsius is bubbled into 500 g of water originally at 20 degree Celsius. What
    1. 4 answers
    2. asked by rita
    3. 2,337 views
70. A heated spherical ceramic object (diameter= 10cm), initially at 1200k, is held in a large enclosure whose walls are maintained
    1. 1 answer
    2. asked by tom
    3. 777 views
71. At a pressure of 1ATM, _____ KJ of heat is needed to vaporize a 32.3 g sample of liquid ethanol at its normal boiling point of
    1. 1 answer
    2. asked by Jessica
    3. 3,163 views
72. When heat flows from a hot spot to a cooler spot, entropy increases. When heat is forced to flow from a cool spot to a warmer
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    2. asked by Clueless
    3. 595 views
73. A copper Calorimeter of mass 150g,was half-filled with water of mass 300g and a temperature of 0°C.5g of ice of mass 0°C was
    1. 2 answers
    2. asked by tony
    3. 1,375 views
74. Heat of Combustion of paraffin waxInitial mass of candle 40.3g Mass of tin calorimeter 41.1g Mass of half-filled calorimeter
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    2. asked by Anonymous
    3. 836 views
75. If 226 g of water is contained in a 311 g alu- minum vessel at 11◦C and an additional 92 g of water at 91◦C is poured into
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    2. asked by Eliza
    3. 529 views
76. A 7 gallon bucket of water of mass 26.502 kg and temperature 100◦C is added to a 62 gallon gallon tub of water of mass 234.732
    1. 1 answer
    2. asked by Eliza
    3. 939 views
77. Steam of 100 degree celsius is passed into ice of 100g . The mixture weighs 120g at 35 degree celsius, find the specific heat of
    1. 2 answers
    2. asked by Om Gopal Mishra
    3. 727 views
78. How many grams of steam at 100C must be mixed with 200g of water at 20C in order for the equilibrium temperature to be 50C?
    1. 1 answer
    2. asked by Jack
    3. 1,085 views
79. If the energy used to heat up a block of 2kg of copper is 115.8 kJ, what is the temperature it was heated to if the starting
    1. 1 answer
    2. asked by rob
    3. 532 views
80. in an enclosed container , 100g of ice at -10c and 200g of water at 25 c are mixed. Determine the amount of heat required to
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    2. asked by EBRAHIM
    3. 1,254 views
81. 200g of steam at 110°C is condensed, and the resulting water is frozen into ice at 0°C. How much heat was removed?
    1. 2 answers
    2. asked by robert
    3. 1,866 views
82. Ice of mass 12.0 kg at 0.00° C is placed in an ice chest. The ice chest has 3.10 cm thick walls of thermal conductivity 1.00
    1. 1 answer
    2. asked by Tyler
    3. 738 views
83. A commercial heat pump has CP=3 when the indoor temperature is 20°C and the outdoor temperature is 6°C. How much work is
    1. 0 answers
    2. asked by Anonym
    3. 613 views
84. A 37.0 g ice cube at -15.0 degreesC is placed in 224 g of water at 48.0 degreesC. Find the final temperature of the system when
    1. 0 answers
    2. asked by Idali
    3. 846 views
85. A cube of ice is taken from the freezer at -9.0°C and placed in a 71-g aluminum calorimeter filled with 261g of water at room
    1. 0 answers
    2. asked by Francis
    3. 1,045 views
86. 60.0 g of iron that has an initial temperature of 250 degrees C and 60.0 g of gold that has an initial temperature of 45.0
    1. 2 answers
    2. asked by Tom
    3. 934 views
87. How many joules are required to raise the temperature of 450mL of water from 30 °C to 100 °C?The specific heat of copper metal
    1. 1 answer
    2. asked by Jenner
    3. 3,363 views
88. 1 litre of coffee at 80oC need to be cooled to 40oC. Assuming that all the ice melts and no heat is lost to the environment.
    1. 0 answers
    2. asked by tony
    3. 623 views
89. How much heat (in kilojoules) is required to warm 11.0 g of ice, initially at -14.0 ∘C, to steam at 112 ∘C? The heat
    1. 1 answer
    2. asked by Julia
    3. 2,199 views
90. A system consists of a 0.130-kg chunk of ice floating in 1.12 kg of water, all at 0 ∘C. Part A How much thermal energy must be
    1. 1 answer
    2. asked by ......
    3. 771 views
91. A process is carried out at constant pressure. Given that ΔE is positive and ΔH is negative,Select one: A. the system absorbs
    1. 1 answer
    2. asked by betty boop
    3. 1,627 views
92. Calculate the heat that must be supplied to 10.5 g of Ne(g) at 0.15 atm to raise its temperature from 24◦C to 54◦C at
    1. 3 answers
    2. asked by David
    3. 983 views
93. How much heat is released when 75.0 g of steam at 100.0 c is cooled to ice at -15.0c?I'm using 6.01 kl/mol for fusion of water,
    1. 0 answers
    2. asked by Kurt
    3. 1,035 views
94. A sheet of gold weighing 11.4 g and at a temperature of 15.6°C is placed flat on a sheet of iron weighing 24.2 g and at a
    1. 1 answer
    2. asked by Dani
    3. 695 views
95. A 2.41 g lead weight, initially at 10.7 ∘C, is submerged in 8.08 g of water at 51.9 ∘C in an insulated container.Question:
    1. 1 answer
    2. asked by myah
    3. 862 views
96. A sample of cobalt, A, with a mass of 5g is initially at 25 degrees Celsius. When this sample gains 6.70J of heat, the
    1. 1 answer
    2. asked by Matthew
    3. 633 views
97. At 1 atm, how much energy is required to heat 51.0 g of H2O(s) at –16.0 °C to H2O(g) at 125.0 °C?
    1. 1 answer
    2. asked by lexy
    3. 643 views
98. "Aluminum metal melts at 658.5°C. What would be the final temperature if 28.0 grams of solid aluminum at this temperature were
    1. 3 answers
    2. asked by Tiffany
    3. 1,300 views
99. How much heat is evolved in converting 1.00 mol of steam at 155.0 ∘C to ice at -45.0 ∘C? The heat capacity of steam is 2.01
    1. 5 answers
    2. asked by Caleb
    3. 3,445 views
100. From the data below, calculate the total heat (in J) needed to convert 22.00 g of icea t -6.00 C to liquid water at 0.500 C.melt
     1. 1 answer
     2. asked by Dean
     3. 4,702 views