How many calories must be supplied to 59 g of ice at −6 C to melt it and raise the temperature of the water to 61 C? The specific heat of ice is 0.49 kcal/kg · K and of water

6,054 results
  1. Physics

    An ice cube is placed in a microwave oven. Suppose the oven delivers 105 W of power to the ice cube and that it takes 32,200 J to melt it. How long does it take for the ice cube to melt?

  2. physics

    A 0.300-kg of ice is initially at temperature of −8.0 °C. How much heat is required to melt three-quarters the mass of the ice only?

  3. Physics

    What is the heat required in kilocalories to convert 2 kg of ice at 0°C completely into steam at 100°C? -80 Calories -1440 Calories -4186 Calories -540 Calories Thanks!

  4. Physics

    The question is: "A block of ice at 0oC is dropped from a height that causes it to completely melt upon impact. Assume that there is no air resistance and that all the energy goes into melting the ice. Show that the height necessary for this to occur is at

  5. physics

    How long would it take a 1 200 W heater to melt 1.00 kg of ice at -12.0°C, assuming all the energy from the heater is absorbed by the ice? (Assume the specific heat of the ice is 2 090 J/kg · °C and the latent heat of fusion of water is 3.33 105 J/kg.)

  6. Physics

    A stone used in the sport of curling has a mass of 20.0 kg and is initially at rest, sitting on a flat ice surface. It is pushed with a constant force of magnitude 25.0N over a distance of 4.00 m. (Assume friction between the stone and the ice is

  7. physics

    If you drop a piece of ice on a hard surface, the energy of impact will melt some of the ice. The higher it drops, the more ice will melt upon impact.Find the height from which a block of ice should ideally be dropped to completely melt it that falls

  8. Physics

    An ice cube is placed in a microwave oven. Suppose the oven delivers 105 W, of power to the ice cube and that it takes 32,200 J to melt it. how long does it take for the ice cube to melt?

  9. chemistry

    How many calories must be supplied to 59 g of ice at −6 C to melt it and raise the temperature of the water to 61 C? The specific heat of ice is 0.49 kcal/kg · K and of water is 1 kcal/kg · K; the heat of fusion of water is 79.7 kcal/kg, and its heat

  10. chemistry

    The heat of fusion of ice is 6.00 kJ/mol. Find the number of photons of wavelength = 6.42 x 10e-6 m that must be absorbed to melt 2.00 g of ice.

  11. physics

    A 40-g block of ice is cooled to −71°C and is then added to 590 g of water in an 80-g copper calorimeter at a temperature of 27°C. Determine the final temperature of the system consisting of the ice, water, and calorimeter. (If not all the ice melts,

  12. physics

    The formation of condensation on a glass of ice water causes the ice to melt faster than it would otherwise. If 7.40 g of condensation forms on a glass containing water and 210 g of ice, how many grams will melt as a result? Assume no other heat transfer

  13. physics

    A 2.5 kg block of ice at a temperature of 0.0 degrees Celcius and an initial speed of 5.7 m/s slides across a level floor. If 3.3 x 10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block is

  14. algebra

    6. Half a pepperoni pizza plus three fourths of a ham-and-pineapple pizza contains 765 Calories. One fourth of a pepperoni pizza plus a whole ham-and-pineapple pizza contains 745 Calories. How many Calories are in a whole pepperoni pizza? How many Calories

  15. Physics - ice to liquid

    Fifty grams of hot water at 80oC is poured into a cavity in a very large block of ice at 0oC. The final temperature of the water in the cavity is then 0oC. Show that the mass of ice that melts is 50 g. To melt ice to 50g of water, I think that it will

  16. Science

    How many calories of heat energy are required to melt 20 grams of ice at 0 °C? Answer: _____ calories How many calories of heat are required to evaporate 20 grams of liquid water at 0 °C? Answer: _____ calories

  17. Physics

    How much heat must be added to 60 g of ice at 0 C to melt the ice completely?

  18. Physics

    How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg of ice at -20 deg C, assuming all energy is absorbed by the ice?

  19. physics

    A 2.6 kg block of ice at a temperature of 0.0C and an initial speed of 5.3 m/s slides across a level floor. If 3.3 × 105 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block is entirely

  20. Physics- Help!!

    1. What is the heat required in kilocalories to convert 2 kg of ice at 0°C completely into steam at 100°C? (I thought it was 2000 kilo cals but I think I'm wrong??) a. 80 Calories b. 1440 Calories c. 4186 Calories d. 540 Calories 2. A gaseous refrigerant

  21. Physics

    Take two Styrofoam cups, partially fill them with equal amounts of cold water, and drop equal amounts of ice into each cup to obtain a mixture of ice and water. a. Stir the water and ice mixture in one of the cups vigorously with a nonmetallic stirrer

  22. physics

    In 1986 a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long, 45.0 km wide, and 250 m thick. (a) What is the mass of this iceberg, given that the density of ice is 917 kg/m3? (b) How much heat

  23. Physics

    How much heat must be added to 190 g of ice at 0°C to melt the ice completely?

  24. physics

    An open container holds ice of mass 0.540 kg at a temperature of -18.7 c The mass of the container can be ignored. Heat is supplied to the container at the constant rate of 790 J/minute. The specific heat of ice to is 2100 J/kg . K and the heat of fusion

  25. chemistry

    The specific heat of ice is 0.5 calories/gram. 60 grams of ice will require _____ calories to raise the temperature 1°C. so i just do 0.5/60 ??

  26. Chemistry - Melting Ice

    The heat of fusion of ice is 6.00 kJ/mol. Find the number of photons of wavelength = 6.78×10^−6 m that must be absorbed to melt 6.80 g of ice.

  27. math

    Problem The latent heat of fusion (solid become liquid) for ice is 79.8 cal/gram. How much ice can we melt with 1000 calories of heat? Problem Which would require more heat, melting 500 g of 0 C ice or turning 500 g of 100 C water into steam? Problem A 500

  28. Chemistry

    How many calories are required at 0 degrees C to melt an ice cube with a mass of 25g? I got 2000 cal. Could you tell me if this is right?

  29. Chemistry

    How many calories are required at 0 degrees Celsius to melt an ice cube with a mass of 25 g? Explain in detail. I don't understand.

  30. Chemistry Physics

    How many Btu of heat are required to melt 33.0 lb of ice at 32°F and to raise the temperature of the melted ice to 72°F?

  31. Chemistry

    how much heat is required to melt an ice cube that is 4.2 cm x 2.1 cm x 2.9 cm? The density of ice is 0.92 g/cm3

  32. college chemitsry

    calculate the calories needed at 0 C to melt 200. g of ice

  33. Math

    A serving of ice cream contains 5000 calories. 200 calories come from fat. What percent of the total calories come from fat?

  34. Jake

    If 142.38 g of l water at 21.7 degrees C is placed into a syrofoam cup with 174.36 g of ice at -27.5 degrees C what would be the final temperature of the entire contents at equilibrium? If it is partially frozen, how many g of the ice has melted? given

  35. science

    which of the following is the best reason salt is sometimes spread on icy highways? 1) when a car drives on the ice, the firstion created between the salt and the ice produces heat that melts the ice. 2)when salt chemically reacts with the water, the heat

  36. Chemistry

    Calculate the heat in calories needed to melt 14.0g of ice at 0C .

  37. Physics

    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 10-5 kcal/s · m · C° and a surface area of 1.20 m2. (a) How much heat must be absorbed by the ice before it melts? (b) If the

  38. Physics

    A 2.5 kg block of ice at a temperature of 0C and an initial speed of 5.7 m/s slides across a level floor. If 3.3*10^5 J are required to melt 1.0 kg of ice, how much ice melts, assuming that the initial kinetic energy of the ice block id entirely converted

  39. Chemistry

    calories to freeze 35g of water calories to freeze 250g of water kilocalories to melt 140g of ice

  40. Physics

    In 2002, a gargantuan iceberg broke away from the Ross Ice Sheet in Antarctica. It was approximately a rectangle 218 km long, 25.0 km wide, and 250.0 m thick. What is the mass of this iceberg, given that the density of ice is 917 kg/m3? How much heat

  41. Chemistry

    Calculate the amount of energy in calories that is needed to melt 45g of ice at -20°C and then increase the temperature to 95°C

  42. Science

    a 67 gram chunk of ice (Heat of Fusion = 6.0 kJ/mol) in a beaker immersed in a water bath. To produce just enough heat to melt the ice, how many moles of solid NaOH (Heat of Solution = -445.1 kJ/mol) must be added to this system to just melt the ice.

  43. Chemistry

    how much heat is required to melt an ice cube that is 4.2 cm x 2.1 cm x 2.9 cm? The density of ice is 0.92 g/cm3

  44. Science

    a layer of ice has an area of 35m2 and is 2.5cm thick and is -7.5'c. how much water (in kilograms) is needed to melt the ice?

  45. Chemistry

    What total energy must be absorbed (from the environment) to change 1.00kg of ice at -30.0°C on a lake surface in February to water at 20.0°C in August? Add the following heats.. heat ice from -30 to OC melt ice at 0C heat water from 0C to 20C

  46. Physics

    A 0.0475 kg ice cube at −30.0°C is placed in 0.577 kg of 35.0°C water in a very well insulated container. The latent heat of fusion of water is 334 kJ/kg, the specific heat of ice is 2092 J/(kg · K), and the specific heat of water is 4184 J/(kg · K).

  47. physics

    In 1986 a gargantuan iceberg broke away from the Ross Ice Shelf in Antarctica. It was approximately a rectangle 160 km long, 45.0 km wide, and 250 m thick. (a) What is the mass of this iceberg, given that the density of ice is 917 kg/m3? (b) How much heat

  48. physics

    The formation of condensation on a glass of ice water causes the ice to melt faster than it would otherwise. If 8.80 g of condensation forms on a glass containing water and 170 g of ice, how many grams will melt as a result? Assume no other heat transfer

  49. Math

    A serving of ice cream contains 1200 calories. One hundred forty-four calories come from fat. What percent of the total calories come from fat???

  50. math

    A serving of ice cream contains 1200 calories. One hundred forty-four calories come from fat. What percent of the total calories come from fat?

  51. Physics

    Latent heat question: Your car's windshield is covered with a .58 cm thick layer of ice. The ice has an area of 1.6m^2. If the temperature of the ice is -2C, how much heat is required to melt all the ice?

  52. physics

    A woman finds the front windshield of her car covered with ice at -12.6°C. The ice has a thickness of 4.80 10-4 m, and the windshield has an area of 1.25 m2. The density of ice is 917 kg/m3. How much heat is required to melt the ice?

  53. Physics

    A styrofoam cooler is a cube with side length of 20.0 cm and walls with thickness of 1.9 cm. If the external temperature is 27.0 deg. C and the cooler contains ice and water at 0 deg. C. How much heat is transferred into the box in 24 hours? - I got

  54. physics

    A 40-g block of ice is cooled to −71°C and is then added to 590 g of water in an 80-g copper calorimeter at a temperature of 27°C. Determine the final temperature of the system consisting of the ice, water, and calorimeter. (If not all the ice melts,

  55. Physics

    2. Suppose you pour 15 g of hot water (at 55 oC) into a glass that contains 20 g of ice (at - 10 oC). Neglect the heat absorbed in the glass itself. a. How much heat would the water give up to get cooled to the melting point? b. How much heat would it take

  56. Physics

    A 2 kg block of ice is placed in a container at 0 °C. How much energy is required to completely melt the block of ice? (Specific latent heat of fusion for ice = 334 J/g.) A little confused as to what formula to use for this

  57. Hea;th

    Empty calories are defined as ________. A. Calories from dairy products only B. Calories from low-fat foods and/or fruits and vegetables C. Calories from water and other foods or beverages that have zero calories D. Calories from solid fats and/or added

  58. physics

    When you go out to your car one cold winter morning you discover a 0.54 cm thick layer of ice on the windshield, which has an area of 1.6 m2. If the temperature of the ice is -4.1°C, and its density is 917 kg/m3, find the heat required to melt all the

  59. physics

    a 75kg skater is travelling at 15m/s stops suddenly on the ice. If the ice is at 0 degrees and it is assumed that all of the skaters energy is converted to heat, how much ice does he melt? (latent heat of fusion for water is 3.3x10^5 J/kg)

  60. physics

    The specific heat capacity of ice is about 0.5 cal/g degree C A)Supposing that it remains at that value all the way to absolute zero, calculate the number of calories it would take to change a 0.50g ice cube at absolute zero (-273 degree C}) to 0.50 g of

  61. physics

    How much heat must be added to 128.7 g of ice at 0 degrees Celsius to melt the ice completely? Answer = _____calories

  62. math

    the calories in a breakfast sandwich come from three sources: 144 calories are from carbohydrates 108 calories are from fat and 56 calories are from protein use properties of addition to find the total number of calories in the sandwich

  63. Physics

    If a cup is half full of ice, how long will it take to melt the ice in a microwave oven (1000 W) set on high? Also, if you did the above but added 100ml of ice cold water to the ice would this change the results of melt time?

  64. chenistry

    how many calories are required to melt a 135.0g sample of ice at 0.0 c

  65. chem

    calories need to melt 60.0 of ice at 0 and to warm the liquid to 65 (two steps)

  66. Physics

    Eighty calories must be added to one gram of ice at 0ºC to melt it. What is the approximate mechanical equivalent of this amount of energy?

  67. physics

    The Weistin Stamford Hotel in Detroit is 228 m tall. Suppose a piece of ice which initially has a temperature of o degrees celcius falls from the hotel roof and crashes to the ground. Assuming that 50% of the ices mechanical energy during the fall and

  68. physics

    The formation of condensation on a glass of ice water causes the ice to melt faster than it would otherwise. If 8.00 g of condensation forms on a glass containing both water and 200 g of ice, how many grams of the ice will melt as a result? Assume no other

  69. Chemistry

    Calculate (in calories) the amount of heat needed to melt 96g of ice at -24 degrees C to water at 28 degrees C.

  70. chemisty

    get a piece of ice, rub it on your arm until it melts. Do you feel the heat leaving your body to melt the ice? how much heat was required to melt one gram of a sample ice and warm it to the body temperature of 37 degress celcius? Heat= Heatfusion*massice +

  71. Physics

    An ice cube is placed in a microwave oven. Suppose the oven delivers 135 W of power to the ice cube and that it takes 30200 J to melt it. How long does it take for the ice cube to melt?

  72. Physics!!!Please Help!

    -Steam at 100 ¡ãC is mixed with 166.4 g of ice at ¨C32.8 ¡ãC, in a thermally insulated container, to produce water at 44.6 ¡ãC. Ignore any heat absorption by the container. -Cwater = 4186. J/(kg ¡ãC) -Cice = 2090. J/(kg ¡ãC) -Lf,water = 3.33

  73. Physics-

    -Steam at 100 ¡ãC is mixed with 166.4 g of ice at ¨C32.8 ¡ãC, in a thermally insulated container, to produce water at 44.6 ¡ãC. Ignore any heat absorption by the container. -Cwater = 4186. J/(kg ¡ãC) -Cice = 2090. J/(kg ¡ãC) -Lf,water = 3.33

  74. Physical science

    A) a 100 gram ice cube is at -10 degrees celcius. how many calories needed to raise it to 0 degrees C.? B) once its at 0 degrees, how many more calories are needed to melt it? C) once melted, how many are needed to raise it to 100 degrees C.? need answers

  75. physics

    The formation of condensation on a glass of ice water causes the ice to melt faster than it would otherwise. If 8.80 g of condensation forms on a glass containing water and 170 g of ice, how many grams will melt as a result? Assume no other heat transfer

  76. physics

    Ice of mass 11.0 kg at 0.00° C is placed in an ice chest. The ice chest has 3.00 cm thick walls of thermal conductivity 1.00 10-5 kcal/s · m · C° and a surface area of 1.25 m2. (a) How much heat must be absorbed by the ice before it melts? (b) If the

  77. physics

    The formation of condensation on a glass of ice water causes the ice to melt faster than it would otherwise. If 7.40 g of condensation forms on a glass containing water and 210 g of ice, how many grams will melt as a result? Assume no other heat transfer

  78. Physics

    Suppose 100 g of water at 20°C is poured over a 70-g cube of ice with a temperature of -8°C. If all the ice melts, what is the final temperature of the water? If all of the ice does not melt, how much ice remains when the water–ice mixture reaches

  79. physics

    An open vessel contains 0.5 kg of ice at -20 degree Celsius. The mass of the container can be neglected. Heat is supplied to the vessel at constant rate of 420 J/min for 500 min. (a) After how many minutes does the ice start to melt? (b) After how many

  80. physics

    A piece of ice its mass is 2.5 kg and at 0.0 C temperature , it is crawling on the ground with 5.7 m/s , what is the mass of the melted ice , if we know all of the kinetic energy of the ice turn into the internal energy (of the ice ) , that we need 3.3 X

  81. Chemistry

    ALL ice melts at 0*C, but it requires MORE HEAT to melt 10g of ice than it would for 20g of ice. Why? I thought it was the opposite.

  82. math

    At Thanksgiving dinner, Deborah ate a portion of turkey (673 calories;masch potatoes (408 calories);stuffing (519 calories); cranberry sauce (219 calories);beans (278 calories); and pumpkin pie (523 calories); approximately how many calories did she

  83. Calculus

    A dish of ice cream is left on the table in a room with a constant temperature of 70ºF. At t = 0, the temperature of the ice cream is 20ºF. Five minutes later, its temperature is 25ºF. When will it melt? (The ice cream will melt at 35ºF.) 15 minutes

  84. physics

    Suppose 300 g of water at 20°C is poured over a 50-g cube of ice with a temperature of -6°C. If all the ice melts, what is the final temperature of the water? If all of the ice does not melt, how much ice remains when the water–ice mixture reaches

  85. physics

    An 8.56 kg block of ice at 0 degrees celsius is sliding on a rough horizontal icehouse floor (also at 0 degrees celsius) at 15.6 m/s. Assume that half of any heat generated goes into the floor and the rest goes into the ice. How much ice (in kg) has melted

  86. Science - Melting Ice

    In the process of heating ice into the boiling state of its liquid form, did the procass absorb or release energy? Did the molecules spontaneously move fast? Where did the energy come from and where did it go? did it increase or decrease? was it lost? Were

  87. Physics HELP!

    2. Suppose you pour 15 g of hot water (at 55 oC) into a glass that contains 20 g of ice (at - 10 oC). Neglect the heat absorbed in the glass itself. a. How much heat would the water give up to get cooled to the melting point? b. How much heat would it take

  88. math

    Olga knows that, if she leaves a tray of ice cubes on the counter all night,they are going to melt.Which of the following best describes the probability that the ice cubes will melt if they are left on Olga's kitchen counter all night? 0,0.1,1 or 100....is

  89. thermodynamics

    a piece of silver metal is taken from a furnace where the temperature is 75C and placed on large block of ice T 0.0C. assuming that all heat is given up by the silver is used to melt the ice,how much ice is melted?

  90. Health

    Empty calories are defined as ________. A. Calories from dairy products only B. Calories from low-fat foods and/or fruits and vegetables C. Calories from water and other foods or beverages that have zero calories D. Calories from solid fats and/or added

  91. Physics

    After a snow storm, your driveway of area 50m^2 is covered with a layer of ice 10cm high at a temperature of 0C. You decide to use sunlight falling at 200 W/m^2 to melt the ice? Is it good idea? (Density of ice is 920kg/m^3 and 1 cal = 4.184 J.

  92. Physics

    50 grams of ice cubes at -5oC is added to a 1 litre (1 kg) of water that is initially at 30oC. a) Use the table of values to find the energy needed to melt the ice:(energy to raise the temperature of the ice to 0oC+ change the state of the ice to water) b)

  93. physics

    How much heat must be added to 128.7 g of ice at 0 degrees Celsius to melt the ice completely? Answer = _____calories

  94. Physics

    How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg of ice at -20 deg C, assuming all energy is absorbed by the ice?

  95. Physics

    How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg of ice at -20 deg C, assuming all energy is absorbed by the ice?

  96. Physics

    How long would it take a 1.00 x 10^3 W heating element to melt 2.00kg of ice at -20 deg C, assuming all energy is absorbed by the ice?

  97. Science -- Explaination on Heat Capacity?

    I need some1 to explain heat capacity to me because the way my lesson is teaching it is EXTREMELY confusing!! A simple explanation would be nice! Dumb it down 4 a 7th grader!!!!! If you could use the following question in the explanation, that would be

  98. phyiscal science

    calculate the height a block of ice at -25 deg C must be dropped in order to completely melt on impact. No air resistance and all energy goes into melting the ice.

  99. Physics

    Lake Erie contains about 4.8 x 10^17 grams of fresh water. Assume that the lake has frozen solid and that the ice starts off at -3 C. How much energy would the lake need to absorb from the Sun to cause it to evaporate completely? Each gram of water will

  100. Physics-is this correct?

    Lake Erie contains about 4.8 x 10^17 grams of fresh water. Assume that the lake has frozen solid and that the ice starts off at -3 C. How much energy would the lake need to absorb from the Sun to cause it to evaporate completely? Each gram of water will

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