1. CHEMISTRY

    IF you add ice at zero degrees celcius to a container of water maintained at 0degrees, the ice wil float on the water with that water finding a certain level in the container. As the ice melts, forming liquid at zero degrees, would you expect the water

    asked by Aidan on August 30, 2011
  2. chemistry!

    The standard molar heat of vaporization for water is 40.79 kJ/mol. How much energy would be required to vaporize 4.00 mol of water? Answer in units of kJ

    asked by urgent on March 8, 2012
  3. chemistry

    The standard molar heat of vaporization for water is 40.79 kJ/mol. How much energy would be required to vaporize 2.00 mol of water? Answer in units of kJ.

    asked by jane on March 28, 2019
  4. physics 11

    for a project we're required to create a thermose from household products. What ideas can we use to create an insulator. Any other ideas to keep the heat inside the thermos. Thank-you

    asked by need help on November 30, 2009
  5. Chemistry

    Your x-ray lab has a monochromator consisting of a single crystal of nickel cut so that the (001) plane lies in the cube face. At what angle (in degrees) should the cube face be tilted with respect to the incident beam in order to select radiation with a

    asked by c on November 22, 2012
  6. Chemistry

    Your x-ray lab has a monochromator consisting of a single crystal of nickel cut so that the (001) plane lies in the cube face. At what angle (in degrees) should the cube face be tilted with respect to the incident beam in order to select radiation with a

    asked by selly on November 22, 2012
  7. chemistry

    Your x-ray lab has a monochromator consisting of a single crystal of nickel cut so that the (001) plane lies in the cube face. At what angle (in degrees) should the cube face be tilted with respect to the incident beam in order to select radiation with a

    asked by svetika on November 27, 2012
  8. Chemistry

    Your x-ray lab has a monochromator consisting of a single crystal of nickel cut so that the (001) plane lies in the cube face. At what angle (in degrees) should the cube face be tilted with respect to the incident beam in order to select radiation with a

    asked by Roxy333 on November 30, 2012
  9. College Physics

    A 1.00 g lead bullet at 28.0°C is fired at a speed of 230 m/s into a large block of ice at 0°C, in which it becomes embedded. What quantity of ice melts? Can someone walk me through this step by step?

    asked by Anand on January 30, 2012
  10. Physics

    A 64.8 kg ice skater is skating along in a straight line (in the positive direction) at 9.2 m/s when he bends down and scoops up his 24.4 kg doggy sitting still on the ice. What will be the new velocity of the dog-n-skater?

    asked by Emily on March 22, 2016
  11. Algebra

    On a hot summer day, Sunny bought 18 ice creams for her team members. Some were $7 each, and the others were $10 each. If she paid $165 in total, how many $7 ice creams did she buy?

    asked by Glen on September 22, 2013
  12. Chemistry

    Ice has negative caloric count. How much energy, in each of the following units, does your body lose from melting 175g of ice? Express your answers in J, kJ, cal, Cal

    asked by Nicole on November 16, 2015
  13. physics

    A 77.6 kg ice skater is skating along in a straight line (in the positive direction) at 10.3 m/s when he bends down and scoops up his 27.4 kg doggy sitting still on the ice. What will be the new velocity of the dog-n-skater?

    asked by stephanie on November 14, 2017
  14. STATISTICS

    If I go into an ice cream parlor, and I have the choice of having one of 10 different flavors , with one of 5 different toppings and one of 3 different types of cones, How many times can I come back to this place and get a different ice cream cone

    asked by Jake on June 3, 2010
  15. statistics

    If I go into an ice cream parlor, and I have the choice of having one of 10 different flavors , with one of 5 different toppings and one of 3 different types of cones, How many times can I come back to this place and get a different ice cream cone

    asked by Anonymous on February 27, 2011
  16. Moorpark

    Ice has negative caloric content. How much energy, in each of the following units, does your body lose from melting 175g of ice? Express your answer in J, kJ, cal, Cal

    asked by Nicole on November 16, 2015
  17. Chemistry

    Find the entropy change of the universe when 2 moles of water freezes at -10 degrees celsius. The delta G for the freezing of water at -10 degrees celsius is -210 J/mol and the heat of fusion of ice at this temperature is 5610 J/mol.

    asked by Linda on April 21, 2013
  18. algebra

    First: solve for k. Then, go back to the original equation c=k(d-3) and solve for c when d is ten. Second: Area=k*s^2 Put in the fist conditions, solve for k. Then, knowing k, solve for A when is eight. direct variation 1)if c varies directly as d-3, and

    asked by SraJMcGinn on May 21, 2007
  19. Chemistry

    The specific heat of zinc is 0.096 cal/(g °C). Determine the energy required to raise the temperature of 26.1 g of zinc from room temperature (20.0 °C) to 150 °C.

    asked by B on April 3, 2013
  20. 11th grade

    The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams of water?

    asked by katlyn on May 4, 2010
  21. Chem

    The specific heat of zinc is 0.096 cal/(g °C). Determine the energy required to raise the temperature of 26.1 g of zinc from room temperature (20.0 °C) to 150 °C.

    asked by Joel on April 4, 2013
  22. IPC

    The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams of water?

    asked by Katy on October 12, 2010
  23. Chemistry

    The combustion of how many moles of ethane would be required to heat 838 grams of water from 25.0 to 93.0 degrees C? Assume liquid water is formed during the combustion.

    asked by k on November 2, 2012
  24. science

    The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams of water?

    asked by Quan on June 5, 2013
  25. Chemistry

    What quantity of heat is required to flow into 1.50 g of water at 18.0 degrees Celsius that is heated in an electric kettle to 70.0 degrees Celsius?

    asked by Anonymous on April 10, 2013
  26. Chemistry

    How much heat is required to raise the temperature of a 35.0g block of aluminium from 125 degrees celcius to 322 degrees celcius?

    asked by Maryam on November 27, 2012
  27. physics

    Calculate the amount of heat required to raise the temperature of 1kg of water from 30 degrees celsius to 60 degrees Celsius

    asked by g on February 16, 2016
  28. chemistry

    The specific heat of the dilute NaCl solution formed during the neutralization of the HCl is about 2% less than the 4.184 J/k g assumed in the calculation for the molar heat of neutralization of the acid. How will this affect your final result for the heat

    asked by kate on February 23, 2011
  29. Physical Science

    An 84.9 kg man is standing on a frictionless ice surface when he throws a 2.00 kg book at 11.1 m/s. With what velocity does the man move across the ice?

    asked by Rashida on August 29, 2014
  30. math

    If you choose 1 scoop of ice cream from 12 flavors and any 1 topping from a choice of 8, how many different ice-cream sundaes can you make?

    asked by Anonymous on August 17, 2013
  31. Math

    An ice cream shop offers 7 toppings. How many 4-topping ice cream sundaes can you make? A)11 B)28 C)30

    asked by Skye on June 3, 2014
  32. Chemistry

    Assume a piece of hot metal is added to a calorimeter containing 50mL of water at 22C. The amount of heat released by the metal was determined to be 1000J, and the equilibrium temperature in the calorimeter was 26C. Remembering that the specific heat of

    asked by Lance on June 27, 2011
  33. Chemistry

    Assume a piece of hot metal is added to a calorimeter containing 50mL of water at 22C. The amount of heat released by the metal was determined to be 1000J, and the equilibrium temperature in the calorimeter was 26C. Remembering that the specific heat of

    asked by Lance on June 27, 2011
  34. Physics

    "The energy that is transferred as heat to or from the object with the larger heat capacity must be greater than the energy that is transferred as heat to or from the object with the smaller heat capacity." Can someone explain why this concept is true or

    asked by Josh on June 21, 2011
  35. math

    An ice cream van sells 3 different ice-cream flavours with 4 different toppings. How many different choices can be made using only one of the ice-cream flavours and only one of the toppings?

    asked by veekas on January 29, 2017
  36. chemistry

    How many joules of heat are required to completely covert 85.0 grams of water at 40.0° C to steam at 100°C? For water: c = 4.179 J/g °C Hfusion = 6.01 kJ/mol Hvap = 40.7 kJ/mol

    asked by har on April 20, 2016
  37. chemistry

    A heater caused the temperature of a 550 g Aluminum block to change from 22 degrees C to 145 degrees C. How many calories were required to heat the metal block?

    asked by cam on April 11, 2011
  38. Physics

    How much heat is required to raise an 850g copper pan from 18C to 85C if (a) the pan is empty? (b) the pan contains 1.9kg of water? (c) the pan contains 4.3kg of mercury?

    asked by Physics on September 15, 2017
  39. Chemistry

    Water is exposed to infrared radiation of wavelength 3.0×10^−4 cm. Assume that all the radiation is absorbed and converted to heat. How many photons will be required to raise the temperature of 1.7 g of water by 2.2 K?

    asked by Kyle on November 9, 2009
  40. Science

    Calculate the quantity of energy required to change 3.00 mol of liquid water to steam at 100°C. The molar heat of vaporization of water is 40.6 kj/mol

    asked by Emily on March 25, 2013
  41. chemistry

    How many kilojoules of heat is required to completely covert 60.0 grams of water at 32.0° C to steam at 100°C? For water: s = 4.179 J/g °C Hfusion = 6.01 kJ/mol Hvap = 40.7 kJ/mol

    asked by Kate on November 29, 2010
  42. chemistry

    How many kilojoules of heat is required to completely covert 60.0 grams of water at 32.0° C to steam at 100°C? For water: s = 4.179 J/g °C Hfusion = 6.01 kJ/mol Hvap = 40.7 kJ/mol

    asked by Kate on November 29, 2010
  43. chemistry

    calculate the heat energy required to raise the temperature of a 500 gram iron pipe from 25 degrees celcius to 100 degrees celcius

    asked by zigggy on January 6, 2010
  44. writing equations

    We did not find results for: Please help me do this problem: I need to write an expression for the cost of an ice cream cone and "t' number of toppings. The information is once scoop of ice cream for $3 and each topping is $1.

    asked by scott on September 11, 2012
  45. physics 1

    Antarctica is roughly semicircular, with a radius of 2000km. The average thickness of its ice cover is 3000m. How many cubic cm of ice does Antarctica contain? (Ignore the curvature of Earth).

    asked by Anonymous on August 22, 2010
  46. physics

    a 3.55 kg sample of an alloy is heated to 295 degree and plunged into an aluminium vessel containing 10.0L of water. the initial temperature of the vessel and water is 19 degree.the mass of the aluminium vessel is 2.1 kg and the specific heat of aluminium

    asked by Twinkle on April 26, 2007
  47. Statistics

    Looking for someone to verify my homework answers on identifying the sample and population...... 1) A group of 50,000 randomly selected adults were survey about whether they drink at least 6 - 8 oz glasses of water each day. Only 35% said yes to the

    asked by Carmen on February 26, 2010
  48. math

    a large cube is built from centimeter cube. faces of large cube are painted 1000 are unpainted what is the edge length ,how many are painted on one face two face and three faces If 1000 are unpainted, that must mean that the inner dimensions are 10x10x10.

    asked by margaret on January 21, 2007
  49. Math

    An ice cream shop owner wants to find out what new flavor of ice cream he should sell in his shop. Which method would be the BEST way for the owner to do this? A) Determine which flavor is the best selling now. B) Visit all the other ice cream store and

    asked by Hannah on March 27, 2018
  50. math

    The volume of cube I is 331 m^3 less than the volume of cube II. If an edge of cube I is 10 meters, an edge of cube II is A. 14 meters B. 13 meters C. 12 meters D. 11 meters

    asked by Troy on August 15, 2014
  51. Chemistry 109

    How many joules of heat are required to raise the temperature of 225 g of water from 42 degree celcius to 75 degree celcius?

    asked by Chrystal Kilgore on July 22, 2013
  52. chem

    how many calories of heat energy are required to warm 250ml of water from 35 degrees celsius to 64 degrees celsius?

    asked by Denise on April 1, 2013
  53. Chemistry

    How much heat energy is required to raise the temperature of 4.50 liters of water from 36 degrees celcius to 44.6 degrees celcius?

    asked by carol on January 15, 2012
  54. Chemistry

    How much heat is required to raise the temperature of a 125g block of iron from 17.5 degrees celcius to 82.3 degrees celcius?

    asked by Maryam on November 27, 2012
  55. chemisty

    A 5.10-g sample of iron is heated from 36.0 C to 75.0 C. The amount of energy required is 89.5 J. the specific heat capacity of the sample of iron is?

    asked by emily on March 5, 2011
  56. science

    how much energy is required to raise 5 kg of silver 36 degrees celcius with a specific heat of 234 j/kg degrees celcius

    asked by justin on November 30, 2010
  57. Physics

    A vessel contains 10 kg of water and an unknown mass of ice at 0°C. The temperature of the vessel is monitored for 60 minutes. During the first 50 minutes, the temperature remains at 0°C. For the next 10 minutes, the temp steadily increases from 0°C to

    asked by Megan on December 8, 2011
  58. algebra 2

    how do you rationalize 3 divided by the cube root of 5 3/ cube root of 5

    asked by tom on September 30, 2016
  59. Probability

    At an ice cream ship, customers can order a sundae with 1 type of ice cream, 1 type of sauce, and 1 type topping. The types of ice cream are: chocolate; strawberry; vanilla The types of sauce are: caramel, strawberry, chocolate, butterscotch The types of

    asked by Bobbie on April 19, 2011
  60. science

    Why does the first snow melt on the ground?

    asked by Nagaasaa on January 26, 2010
  61. Science

    Where does the energy go when you melt chocolate?

    asked by Robert on March 14, 2010
  62. math

    A cube with an edge length of 4 in is painted on all its sides. Then the cube is cut into 64 cubes with an edge length of 1 in. What percent of the total surface area is painted?

    asked by lacy on September 24, 2014
  63. Algebrad

    A six sided number cube is rolled and a coin is flipped. What is e probability that the number on the cube is less than 4 and the coin lands on heads? I think the answer might be 1/3. Heads and tails is 1 and less than 4 is 3. I am not sure.

    asked by Blake on May 22, 2016
  64. physics 1

    A floating cube is 10 cm on a side and has a density of 800 kg/m^3 . IT is floating in fresh water that has a density of 1000 kg/m^3. what percent of the cube is above the surface of the water? Again, my professor says it is 20%, but how??

    asked by Maria on April 7, 2017
  65. Chem ? Help!

    What is the answer and how do I Calculate the quantity of energy required to change 3.00 mol of liquid water to steam at 100°C. The molar heat of vaporization of water is 40.6 kJ/mol.

    asked by Lisa on May 19, 2008
  66. Physics

    If the air temperature is the same as the temperature of your skin (about 30.0 oC), your body cannot get rid of heat by transferring it to the air. In that case, it gets rid of the heat by evaporating water (sweat). During bicycling, a typical 70.0kg

    asked by Desperate Student on March 14, 2016
  67. physic-heat

    the specific heat of water is one of the highest of all substances.why does this make water a useful liquid to use in hot water bottles? and could you use a lump of nickel to warm your bed instead of a hot water bottle?which would be better? why? I will be

    asked by Pauline on April 8, 2007
  68. science

    If you pour 40g of refrigerated milk (at 4 degrees C) into 200g of freshly percolated coffee (at 96 degrees C), what would the final temperature of your coffee be? Milk has a specific heat capacity of s=3.93J/g degrees C. Coffee has a specific heat

    asked by freedom on November 6, 2015
  69. chemistry

    an iron rod embedded in ice placed in water beaker.what will be level of water when ice melts

    asked by shahzad on June 28, 2013
  70. physics

    an 83.2 kg girl is standing on a frictionless ice surface through a 2.00 kg book at 12.6 m/s at what velocity does the girl move across the ice?

    asked by Anonymous on April 6, 2015
  71. English

    1. The ice must be 15 centimeters thick at least. 2. The ice must be at least 15 centimeters tall. (What is is the proper position of 'at least'? Are both OK? Do both sentences have the same meaning?)

    asked by rfvv on November 18, 2013
  72. physics

    a piece pf ice floats in water.what will happen to the water level when the ice melts completely?

    asked by sanjeet on November 21, 2010
  73. Science

    2. Two liquids are poured into two cups. Cup A contains a colorless, odorless liquid. Cup B contains a colorless liquid with a strong odor. An ice cube floats in Cup A but sinks in Cup B. When heated, the liquid in Cup B boils at a much lower temperature

    asked by Lexi-girl on September 6, 2017
  74. science

    350g ofwater at 30 degree celcius is contained in a copper vessel of mass 50g. Calculate the mass of ice required to bring down the temperature of the vessel and its content at 5 degree celcius.

    asked by manoj on March 16, 2014
  75. Chemistry

    when pure sodium hydroxide is dissolved in water , heat is evolved in a laboratory experiment measure a molar heat of solution of sodium hydroxide the following procedure was followed. to a calorimeter containing 300g of water at 20.0 C and 10.65g of NaOH

    asked by jim on March 23, 2007
  76. PHYSICS

    ADDITIONAL INO ADDED AT BOTTOM a spectator at a hockey game is sitting in a seat situated 10.4m above ground leve. if the spectator has a mass of 52.6 kg, calculate her gravitational potential energy relative to: a)ground level Eg=mgh =52.6X9.8X10.4

    asked by Sarah on January 31, 2010
  77. Thermodynamic

    One mole of CO2 is to be compressed adiabatically from 1 bar and 25 C. Because of irreversibilities and poor design of the compressor the compressor work required is found to be 25 %greater than that for a well-designed (reversible) compressor. Compute the

    asked by Charles on March 8, 2016
  78. Chemistry

    Which of the following systems would be considered to be at equilibrium: I. an open flask with 2.0 mL of perfume II. a closed flask with 10 mL of water III. an open flask with 10 mL of water IV. a closed flask with an ice cube and 10 mL of water a. I d. b.

    asked by Mario on March 12, 2010
  79. Chemistry - General, Hess's Law

    In an experiment, 11.6g of a salt was dissolved in 100.0ml of water contained in the above calorimeter, all at an initial tmperature of 24.5 degrees Celsius. After dissolution was complete, the temperatur was 31.8C. The specific heat of the solution is

    asked by Sahar on July 24, 2009
  80. Science

    1. You observe two beakers containing clear liquid and ice cubes. In the first beaker, the ice cubes are floating. In the second, the ice cubes are on the bottom of the beaker. Write a hypothesis to explain the difference in your observations about the two

    asked by Crystal on September 18, 2012
  81. Dr vsec

    The density of water of ice is 0.917gm/cm-3 and the density of sea water is 1.03gm/cm-3.calculate the ratio volume of ice outside to the volume of ice which is inside the sea water

    asked by Anant shukla on November 23, 2015
  82. Chemistry

    How much energy, in calories, will be required to evaporate 125.0 mL of ethanol at its boiling point? Given: Density 0.818 g/mL Boiling Point 78.5 C Heat of Vaporization 210 cal/g Any help is appreciated!

    asked by Brooke on January 19, 2011
  83. Physical Science

    Hello, Can some one tell me if I came to the correct answer... Thank You How much heat energy is required to raise the temperature of 5 kilograms of coal from 20 degrees celsius to 220 degrees celcius? my answer: 1,314,718 J

    asked by Mandi on February 8, 2008
  84. chemistry

    how much energy in calories, will be required to evaporate 125.0ml of ethanol at its boiling point? Density=0.818g/ml boiling point=78.5C heat of vaporization=210 cal/g

    asked by Ashley on January 27, 2010
  85. chemistry/please double check

    Hi, I just need to know if I finally got this exercise right. Calculate the amount of heat in kilojoules released when 50 grams of steam at 125 Celsius are converted to 50 grams of ice at -125 Celsius. so, qw= 50*4.184J/g C (125 C-o)= 26.15 x 10^3 qi=

    asked by Joshua on October 28, 2008
  86. Chemistry

    How much heat is required to convert 9.00 g of water at 100°C into steam at 100°C, if ∆Hvap for water = 40.7 kJ/mol?

    asked by Karen on July 28, 2018
  87. Chemistry

    How much heat is required to raise the temperature of a 65-g sample of water from 32 degrees celsius to 65 degrees celsius

    asked by Lisa on February 11, 2012
  88. chemistry

    How much heat is required to warm 1.30 L of water from 30.0 degrees C to 100.0 degrees C? (Assume a density of 1.0 g/mL for the water.)

    asked by Mely on October 18, 2010
  89. chemistry

    How much heat is required to warm 1.60 L of water from 26.0 degree C to 100.0 degree C? (Assume a density of {1.0 g/ml for the water.)

    asked by Mely on October 18, 2010
  90. Chemistry

    Calculate the total heat required to vaporize 1.5 kg of water at 100oC to water vapor at 100oC?

    asked by en1405 on March 8, 2016
  91. UNP

    HOW MANY CALORIES ARE REQUIRED TO HEAT OF EACH OF THE FOLLOWING FROM 15 DEGREE CELSIUS TO 65 DEGREE CELSIUS? A. 30 G OF Aluminum b. 20 g of platinum c. 35 g of water

    asked by Dangadang on March 16, 2011
  92. Chem 100

    at 1 atm how much energy is required to heat 67 grams of H2O(s) at -22 degrees C to H2O(g) at 159 degrees C

    asked by Kristin on May 1, 2011
  93. math

    Hello! I am confused on how to do this math problem. Can you please help me or explain how you get this answer please? Miriam orders a shipment of 1, 500 pounds of ice for her supermarket. The ice comes in individual 5-pound bags that cost Miriam

    asked by Megan on February 21, 2013
  94. Physics

    A 65.0 kg ice skater moving to the right with a velocity of 2.47 m/s throws a 0.18 kg snowball to the right with a velocity of 24.3 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction

    asked by Dakota on November 8, 2012
  95. Physics

    A 65.0 kg ice skater moving to the right with a velocity of 2.47 m/s throws a 0.18 kg snowball to the right with a velocity of 24.3 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction

    asked by Dakota on November 9, 2012
  96. Chemistry

    Please help me solve this question: A layer of peat beneath the glacial sediments of the last ice age had a carbon-14 content of 25% of that found in living organisms. How long ago was this ice age?

    asked by Mon on March 22, 2013
  97. physics

    You drop 454 g of solid ice at −35°C into a bucket of water (1,200 g) at 45°C. Eventually, the ice all melts, and the entire system comes into thermal equilibrium. Find the final temperature of the system.

    asked by chase on January 25, 2016
  98. Physics

    You drop 378 g of solid ice at −35°C into a bucket of water (1,200 g) at 45°C. Eventually, the ice all melts, and the entire system comes into thermal equilibrium. Find the final temperature of the system.

    asked by Sierra on July 31, 2012
  99. chemistry-Buffer Q

    You have a solution of .5 L of 1.74g of NH3 and 4.15g of (NH4)2SO4. How many ml of 14M HCl is required for a pH of 9.00? I don't know how to go finish this one. I thought about figuring the concentrations of each (NH3, NH4), making an ice table and solving

    asked by matt on November 14, 2011