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?

    asked by John on March 16, 2010
  2. CHEMISTRY

    Assuming equal concentrations, rank these aqueous solutions by their freezing point: LiSO4, Li3PO4, SnCl4, NH4Br. (from highest freezing point to lowest freezing poinT) Thanks.

    asked by Kylie on February 18, 2012
  3. Chemistry

    To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 16.0 g, and its initial temperature is -11.4 °C. The water resulting from the melted ice reaches the temperature of your skin, 31.0 °C. How much

    asked by Anon on December 8, 2012
  4. algebra

    Josephine’s ice cream shop always makes sure its sundaes maintain a ratio of 4:1 of ice cream to toppings. A group of friends orders sundaes and receives 5 cups of ice cream total. How many cups of toppings, total, did they receive? Please explain how I

    asked by Jane on September 14, 2018
  5. geometry

    An ice cream company manufactures and distributes ice cream cups and cones to grocery stores. The company sells the ice cream cups in packages of 12, 18, and 24 units, and the ice cream cones in packages of 14 and 21 units. Which of the following

    asked by Peter on May 27, 2018
  6. physics

    A cube of ice is take from the freezer at -8.5C and placed in a 95g calorimeter aluminum cup containing 310g of water at 20degC. The final situation is observed to be all water at 17degC. What was the mass of the ice cube?

    asked by Mark on April 24, 2011
  7. 7th grade math Ms.Sue please!

    Use cross products to see if each pair of ratios forms a proportion. Replace each box with = or ≠. 1. 7/5 ? 15/10 = ≠ 2. 6/8 ? 15/20 = ≠ Solve each problem. 3. 2/3 = 1.2/x x = 18 x = 1.8 x = 0.2 x = 10 4. 4/5 equals 8/x plus 2 x = 4 x = 9.5 x = 2 x =

    asked by Delilah on October 26, 2012
  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?

    asked by Rosco on March 15, 2010
  9. chemistry

    1. Find the molality of the solution prepared by dissolving 0.238g toluene, C7H8, in 15.8g cyclohexane 2. A pure sample of the solvent phenol has a freezing point of 40.85 degrees C. A 0.414 molal solution of isopropyl alcohol was observed to have a

    asked by kales on February 9, 2015
  10. Math, Please check answers

    I do not want to fail this, could you please help me with number 1 and 3.D, and then check my other answers? Thank you. 1. Find and simplify the volume-to-surface-area ratio for each of the three possible ice cube shapes. You can use this chart. |Shape|

    asked by Alexia Smith on March 3, 2016
  11. Math

    I am doing a project, are my answers correct? 1. Find and simplify the volume-to-surface-area ratio for each of the three possible ice cube shapes. You can use this chart. |Shape| S/A Formula|Volume Formula Cube | S.A=6s^2 | V=s^3 6/s Sphere|S.A+4 pi

    asked by Alexia Smith on March 4, 2016
  12. chemistry

    An ice cube with a mass of 40.0 g melts in water originally at 25.0 degree C. a. How much heat does the ice cube absorb from the water when it melts. Report the answer in calories, kilocalories, joules b. Calculate the number of grams of water that can be

    asked by kim on April 27, 2010
  13. Chemistry

    calculate the freezing and boiling points of each of the following solutions. (a) 0.37 m glucose in ethanol freezing point ______I got -1.2e2 but its wrong_______°C boiling point _________I got 1.1e2 but its wrong:(____°C (b) 15.0 g of decane, C10H22, in

    asked by Rebekah on March 24, 2011
  14. molal

    the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is the freezing point (C) of a solution prepared by dissolving 50.0 g of glycerin (C3H8O3, A nonelectrolyte) in 200 g of ethanol.

    asked by lisa on September 13, 2010
  15. physics

    An ice cube at its freezing point is placed in nested Styrafoam cups which contain 240 g of water at 21.5 °C. If the final equilibrium temperature when the last trace of ice melts is 25.0 °C, what was the mass of the ice cube?

    asked by emily on December 21, 2017
  16. Math

    I really do not want to fail this project, could anyone please help me understand this and go through step by step with me? Thank you so much. Modern Design magazine is having a contest to design the best ice cube in one of three shapes¡Xa cube, a sphere,

    asked by Alexia Smith on March 2, 2016
  17. Math

    A=2 cups concentarte:3 cups water B=5 cups concentrate:9 cups water C=1 cup concentrate:2 cups water D=3 cups concentrate:5 cups water For each mix, how many batches are needed to make juice for 240 campers? (each camper gets half a cup of juice)

    asked by Gaby on November 20, 2008
  18. Science

    A cube of ice is dropped carefully into cylinder of liquid, and the following observations are made ; 1. The cube floats about half-way down the cylinder. 2. After 30 secs the cube has melted a little but floats in the same position. 3. After 50 secs the

    asked by Brad Samuels on April 19, 2020
  19. Science

    How many joules of heat are necessary to melt 500g of ice at its freezing point

    asked by Anonymous on February 11, 2020
  20. physics

    A 50g ice cube is added to 110g of water in a 62g aluminum cup. The water and cup initially have a temperature of 23°C. Find the initial temperature of the ice cube such that all of the water is just turned to ice. Use the following specific heats: water

    asked by sandhya on June 29, 2010
  21. chemistry

    you are conducting a freezing-point determination in the laboratory by using an aqueous solution of KNO3. The observed freezing point of the solution is -1.15 C. Using a pure water sample, you recorded the freezing point of the pure solvent of the same

    asked by Anonymous on February 17, 2011
  22. science help PLS

    Scientists earlier believed that the lowest measurable temperature is the freezing point of ice. However, modern scientists believe that temperatures below the freezing point of ice can also exist. What best accounts for these different opinions?

    asked by Oscar on February 8, 2016
  23. physics

    The ice skate of a 210-pound hockey player is in contact with the ice over a 2.5mm x 15cm area. Determine the freezing point of the ice under the blade of the skate?

    asked by Joseph on October 30, 2016
  24. Calculus

    The volume of an ice cube as it melts is given by the equation: V = 2.1x10^-5 t^3 - 6.5x10^-4 t^2 - 0.346 t + 21.31 Determine the rate at which the sides of the ice cube melt at both 10 and 75 minutes after the beginning of the melting process. You may

    asked by Anonymous on November 8, 2012
  25. math

    1.Of the students in Rosalie’s dance class, 29 out of 59 have participated in dance class before. About how many of her students have participated in dance class before? (1 point) 0 1/2 (My answer) 1 2 For questions 3–5, use the recipe below. Punch

    asked by Kailyn on January 4, 2017
  26. physics

    50+kg+ice+cube+slides+without+friction+up+and+down+a+30°+slope.+The+ice+cube+is+pressed+against+a+spring+at+the+bottom+of+the+slope,+compressing+the+spring+10cm+.The+spring+constant+is+25Nm.+When+the+ice+cube+is+released,what+distance+will+it+travel+up+th

    asked by zama on April 4, 2013
  27. Physics

    A 50 g ice cube can slide without friction up and down a 32° slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 10.16 cm. The spring constant is 22 N/m. When the ice cube is released, what distance will it

    asked by Joe on September 28, 2011
  28. physical

    An ice cube at 0°C measures 13.9 cm on a side. It sits on top of a copper block with a square cross section 13.9 cm on a side and a length of 19.1 cm. The block is partially immersed in a large pool of water at 88.5°C. How long does it take the ice cube

    asked by itufizik on July 23, 2012
  29. physics

    An ice cube at 0°C measures 14.1 cm on a side. It sits on top of a copper block with a square cross section 14.1 cm on a side and a length of 18.9 cm. The block is partially immersed in a large pool of water at 89.3°C. How long does it take the ice cube

    asked by SUZAN on July 27, 2014
  30. Chemistry

    Benzene (C6H6) has a normal freezing point of 5.50oC and a density of 0.88 g/mL. When 1.28 g of naphthalene (C10H8) is dissolved in 125 mL of benzene, the freezing point of the solution is 5.03oC. Determine the molal freezing point constant for this

    asked by Sarah on February 8, 2017
  31. Chemistry

    What Occurs as a salt dissolves in water? the number of ions in the solution increases and the freezing point decrease the number of the ions in the solution increase and the freezing point increase the # of ions in the solution decrease and the freezing

    asked by Kat on March 26, 2007
  32. chemistry

    The freezing point of a 0.010 m aqueous solution of a nonvolatile solute is ?0.072°C. What would you expect the normal boiling point of this same solution to be? have no clue, thanks for the thelp Freezing point depression= N*kf* molality you have

    asked by tyler on December 5, 2006
  33. 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

    asked by kayci on May 12, 2010
  34. 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

    asked by James on July 19, 2012
  35. Math

    At an ice cream there there are 10 flavors of ice cream, four toppings, three types of sprinkles, and either whipped cream or chocolate sauce. How many combinations of ice cream are there? 10*4*3*2=240 combinations I think its 240 combinations but am not

    asked by Isabelle on May 19, 2015
  36. Physics

    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 temperature of 20.0°C. The final situation is observed to be all water at 13.4°C. What was the mass of the ice cube (in grams)?

    asked by Francis on April 4, 2017
  37. chem

    I need to find the calorimeter constant for this experiment. Mass of nested cups (two cups inside one another): 3.04 g Mass of single cups: 1.51 g 75 mL of cold water goes into nested cup: 76.045 g and the temp. remained constant at 23.0 75 ml of warm

    asked by lalala on May 31, 2010
  38. chemistry

    I need to find the calorimeter constant for this experiment. Mass of nested cups (two cups inside one another): 3.04 g Mass of single cups: 1.51 g 75 mL of cold water goes into nested cup: 76.045 g and the temp. remained constant at 23.0 75 ml of warm

    asked by red on May 30, 2010
  39. Chemistry

    1) For a freezing point depression experiment we had to create an ice bath and add salt to the ice. I have to answer the question, why was salting the ice necessary in order to complete the experiment and how does this apply to the principles/concepts

    asked by Hannah on February 21, 2012
  40. Chemistry

    Each increase in pressure of 100 atm decreases the melting point of ice by about 1.0¡ÆC. Q. One possible explanation of why a skate moves smoothly over ice is that the pressure exerted by the skater on the ice lowers its freezing point and causes it to

    asked by KK on October 3, 2016
  41. Fraction

    to make one fruit drink: 4/8 cup of yogurt and one cup of ice 5/8 cups of bananas how many cups of ice? 2/8 cups of blueberries how many cups of ice?

    asked by Bryce on March 2, 2015
  42. Chemistry

    3) You pour 240 mL of Coke into a glass, where the T of the beverage is at 10.5 *C. You then add one ice cube of 45g. Determine the final temperature and the amount of ice remaining, if any. So I know that there won't be any more ice left because they will

    asked by Robert on May 9, 2012
  43. Physics

    An ice cube of mass M is placed at rest in on a circular track of radius R, as shown at right. The position of the ice cube along the track follows that of a circle, given by: x^2 + (R – y)^2 = R^2 . A)With respect to the bottom of the track, calculate

    asked by Jimmy on May 1, 2009
  44. science

    You freeze 92g of water, and it becomes a cube of ice. a. What is the mass of the ice cube? b. The cube's volume os 100cm3. What is it's density? c. Will the ice cube float or sink in water?

    asked by Max on December 7, 2012
  45. Algebra 1

    The debate team needs $240.00 to attend a debate tournament. The club decides to sell cups of iced tea and lemonade at baseball games. Iced tea will be sold for $.50 per cup and lemonade will be sold for $.80 per cup. A. Write an equation to find how many

    asked by Mike on January 7, 2007
  46. Physics

    On a hot summer day, you've got nothing better to do than play with ice cubes. You are currently sliding a 75 gram Ice Cube up and down a basically frictionless slope. At the bottom of the slope, which is inclined at 30 degrees relative to the horizontal,

    asked by Anonymous on December 1, 2016
  47. pure physics 5054 grade12 zambian exam

    why is it that 10g of ice at freezing point cools a drink faster than water of mass 10g at the same temperature(freezing point) [4marks]

    asked by Ackron Z on October 13, 2017
  48. Math

    Since the purpose of an ice cube is to keep a drink cold, is it better for an ice cube to have a high volume or a low volume? b. Since heat touching the surface of an ice cube causes it to melt, is it better for an ice cube to have a large surface area or

    asked by Moosestang on March 9, 2019
  49. science

    Scientists earlier believed that the lowest measurable temperature is the freezing point of ice. However, modern scientists believe that temperatures below the freezing point of ice can also exist. What best accounts for these different opinions?

    asked by Oscar on January 27, 2016
  50. science help PLS

    Scientists earlier believed that the lowest measurable temperature is the freezing point of ice. However, modern scientists believe that temperatures below the freezing point of ice can also exist. What best accounts for these different opinions?

    asked by Oscar on January 13, 2016
  51. physics

    There is a problem that asks if an ice cube is dropped into nitrogen (boiling point of nitrogen is 77K), how much nitrogen will evaporate? heat lost by ice = heat gained by nitrogen But by is the equation m(ice)*c(ice)*deltaT = m(nitrogen)*L(vaporation) ?

    asked by Pegs on April 21, 2011
  52. Math :)

    Since the purpose of an ice cube is to keep a drink cold, is it better for an ice cube to have a high volume or a low volume? I thought that the higher the volume, the longer the amount of time the ice cube does NOT melt. Which one is best? Thank you. :)

    asked by Mariana W. on April 10, 2016
  53. science

    an ice cube, a glass of cold water, and a swimming pool are each exposed to the same amount of sunlight on a hot day. after five minutes, the ice cube is melted and the cold drink is two degrees warmer, but the temperature of the swimming pool remains

    asked by Oscar on February 21, 2015
  54. physical chemistry

    The ice skate of a 210-pound hockey player is in contact with the ice over a 2.5mm x 15cm area. Determine the freezing point of the ice under the blade of the skate?

    asked by Joseph on October 31, 2016
  55. chemistry

    The ice skate of a 210-pound hockey player is in contact with the ice over a 2.5mm x 15cm area. Determine the freezing point of the ice under the blade of the skate?

    asked by Joseph on October 30, 2016
  56. math

    Analyze It Questions: 1. Since the purpose of an ice cube is to keep a drink cold, is it better for an ice cube to have a high volume or a low volume? Why? (At least 3 sentences.) 2. Since heat touching the surface of an ice cube causes it to melt, is it

    asked by cheyann on March 11, 2016
  57. Math

    A snack bar sells ice snow cones. An ice cube has a side length of 24 centimeters.after shaved all linear dimensions of the ice cube are 1/4 of original dimension

    asked by Jazmin on September 2, 2016
  58. Chemistry

    To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 10.9 g, and its initial temperature is -12.0 °C. The water resulting from the melted ice reaches the temperature of your skin, 29.6 °C. How much

    asked by Karen on April 12, 2014
  59. 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?

    asked by Anonymous on March 9, 2010
  60. Chemistry

    The equation for lowering the freezing point of a solvent is given in your manual. Given that the freezing point for the pure solvent is 79.4 °C , the molality is 0.1 m , and the freezing point depression constant is 6.9 °C/m , determine the freezing

    asked by Asia on September 13, 2015
  61. chemistry

    if the freezing point of the solution had been incorrectly determined to be lower than the true freezing point, how would that affect the calculated molar mass? Explain. The molecular weight would be higher if the true freezing point is bigger than the

    asked by Anonymous on February 1, 2009
  62. physics

    A 67.0 g ice cube can slide without friction up and down a 26.0 degree slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 12.0 cm . The spring constant is 20.0 N/m .When the ice cube is released, what

    asked by Anonymous on November 13, 2010
  63. Chemistry

    Lake VIda is an enormous hypersaline lake that lies under 19 m of ice in the Dry Valleys region of Antartica. The freezing point of this water is approximately -15.0 degrees C, owing to the fact that it is many times as salty as typical saltwater.

    asked by Shea on October 18, 2010
  64. Taylor

    To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 12.6 g, and its initial temperature is -10.4 °C. The water resulting from the melted ice reaches the temperature of your skin, 28.1 °C. How much

    asked by Aubrey on November 15, 2013
  65. Physics

    A 50 g ice cube can slide without friction up and down a 32° slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 10.16 cm. The spring constant is 22 N/m. When the ice cube is released, what distance will it

    asked by Joe on September 28, 2011
  66. chemistry

    To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 16.0 g, and its initial temperature is -10.4 °C. The water resulting from the melted ice reaches the temperature of your skin, 28.3 °C. How much

    asked by Audre on April 25, 2013
  67. Warren

    To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 13.2 g, and its initial temperature is -11.9 °C. The water resulting from the melted ice reaches the temperature of your skin, 30.0 °C. How much

    asked by Kyla on November 20, 2013
  68. Chemistry

    To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 18.5 g, and its initial temperature is -13.3 °C. The water resulting from the melted ice reaches the temperature of your skin, 28.4 °C. How much

    asked by Annie on November 4, 2016
  69. physics

    A 5-g ice cube at ?4°C is dropped into 60 g of water at 40°C. (For the following problems, use the specific heats in this table and the numerical data found in this table.) (a) After enough time has passed to allow the ice cube and water to come into

    asked by lanre on July 26, 2012
  70. Chemistry

    Lake Vida is an enormous hypersaline lake that lies under 19 m of ice in the Dry Valleys region of Antartica. The freezing point of the water is approximately -17 C owing to the fact that it is many times as salty as typical saltwater (assume all of the

    asked by Konan on October 24, 2010
  71. Chemistry

    Lake Vida is an enormous hypersaline lake that lies under 19 m of ice in the Dry Valleys region of Antartica. The freezing point of the water is approximately -17 C owing to the fact that it is many times as salty as typical saltwater (assume all of the

    asked by Konan on October 24, 2010
  72. Science

    A 54-gram sample of an unknown material has a volume equal to 20 20 cm 3. what is the identity of the substance? a.lead b.steel*** c.aluminum d.mercury An ice cube, a glass of cold water, and a swimming pool are each exposed to the same amount of sunlight

    asked by zoe on December 10, 2019
  73. Physics

    The density of ice is 9.20x10² kg/m³. An ice cube which is 20.0mm high floats in water. What height of the side of the ice cube is above the surface of the water?

    asked by Anonymous on November 6, 2018
  74. Chemestry

    Calculate the freezing point of a solution containing 12.2grams of benzoic acid, C6H5CO2H, dissolved in 250 grams of nitrobenzene, C6H5NO2. The freezing point of nitrobenzene is 7.7 C, and its freezing point depression constant is 7.0 C/m.

    asked by Joshua help please on October 26, 2008
  75. chemistry

    Calculate the freezing point of 0.15 m calcium chloride aqueous solution. Assume that the molal freezing point depression constant of water is 1.86°C·kg/mol and that the freezing point of water is 0.00°C

    asked by hereyago on April 19, 2012
  76. math

    A 12 cm by 12 cm ice cube tray is in the shape of a cuboid with twelve hemispheres inset. The depth of each hemispheres is 1 cm. a) If all the hemispheres were filled with water, calculate the total volume of water that the ice cube tray could hold. It is

    asked by Lucas on April 28, 2014
  77. Math

    A 12 cm by 12 cm ice cube tray is in the shape of a cuboid with twelve hemispheres inset. The depth of each hemispheres is 1 cm. a) If all the hemispheres were filled with water, calculate the total volume of water that the ice cube tray could hold. It is

    asked by Lucas on April 27, 2014
  78. 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

    asked by Katherine on December 28, 2010
  79. Science

    why is 0 degress celsius considered both the freezing point of water and melting point of ice?

    asked by Sam on March 4, 2008
  80. Chemistry

    If the freezing point of pure toluene is -95.15 oC and its freezing point depression constant is -8.38 oC/molal, what is the freezing point of a solution made by dissolving 39.338g of anthracene (C14H10) in 150.0mL of toluene? (Density of toluene =

    asked by Jaden on January 30, 2013
  81. algebra

    Ice (at 0 degrees celsius) has a density of 922 kg per meter cubed. If the edge of a cube of ice is 4 cm, what is the mass of the cube?

    asked by Sammantha on January 23, 2009
  82. Physics

    An ice cube of volume 17.7 cm3 is initially at a temperature of -19.3°C. How much heat is required to convert this ice cube into steam?

    asked by Sierra on July 31, 2012
  83. physics

    An ice cube of volume 7.6 cm3 is initially at a temperature of -11.4°C. How much heat is required to convert this ice cube into steam?

    asked by chase on January 25, 2016
  84. Science

    A perfectly square ice cube measures 3cm on each side.It has a mass of 24.6g.Whatcis the density of the ice cube.

    asked by Anonymous on October 16, 2012
  85. molal

    the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is the freezing point (C) of a solution prepared by dissolving 50.0 g of glycerin (C3H8O3, A nonelectrolyte) in 200 g of ethanol.

    asked by lisa on September 14, 2010
  86. molal

    the freezing point of ethanol (C2H5OH) is -114.6C. the molal freezing point depression constant for ethanol is 2.00C/m. what is the freezing point (C) of a solution prepared by dissolving 50.0 g of glycerin (C3H8O3, A nonelectrolyte) in 200 g of ethanol.

    asked by lisa on September 13, 2010
  87. Math

    Since the purpose of an ice cube is to keep a drink cold, is it better for an ice cube to have a high volume or a low volune? why? (I need help on this)

    asked by No on March 19, 2018
  88. Physics

    How much heat is required to change a 35.8 g ice cube from ice at -12.7°C to water at 45°C? (if necessary, use cice=2090 J/kg°C and csteam= 2010 J/kg°C)How much heat is required to change a 35.8 g ice cube from ice at -12.7°C to steam at 113°C?

    asked by Sam on April 25, 2016
  89. Physics

    A 6-g ice cube at −8°C is dropped into 70 g of water at 31°C. (a) After enough time has passed to allow the ice cube and water to come into equilibrium, what is the temperature of the water? (b) If a second ice cube is added, what will the temperature

    asked by Vladimir on July 20, 2012
  90. science

    Why does an ice cube melt @ room temperature? The melting point of water is zero degrees Celsius (32 degrees Fahrenheit). Room temperature is more like 20 degrees C or 68 degrees F. Therefore, heat is tranferred from the warmer room air to the colder ice

    asked by Marissa on May 16, 2007
  91. Math

    A 12 cm by 12 cm ice cube tray is in the shape of a cuboid with twelve hemispheres inset. The depth of each hemispheres is 1 cm. a) If all the hemispheres were filled with water, calculate the total volume of water that the ice cube tray could hold. It is

    asked by Lucas on April 28, 2014
  92. chemistry

    A freezing point depression experiment was conducted using cyclohexane as the solvent. The freezing point of pure cyclohexane is 6.60°C and the freezing point depression constant is 20.00°C/m. The freezing point of a solution containing 0.135 g of an

    asked by Danielle on February 16, 2015
  93. Chem 212

    To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 16.1 g, and its initial temperature is -13.3 °C. The water resulting from the melted ice reaches the temperature of your skin, 31.3 °C. How much

    asked by 1231az on February 19, 2013
  94. chemistry

    10.0 g sample of p-dichlorobenzene, a component of mothballs, is dissolved in 80.0 g of benzene, C6H6. The freezing-point of the solution is 1.20oC. The freezing point of benzene is 5.48oC. The molal freezing –point constant, kf, for benzene is 5.12oC/m.

    asked by Jim_R on August 6, 2009
  95. Chemistry

    A 72.2 g ice cube floats in the Arctic Sea. The temperature and pressure of the system and surroundings are at 1 atm and 0°C. Calculate ΔSsys, ΔSsurr, and ΔSuniv for the melting of the ice cube. (The molar heat of fusion of water is 6.01 kJ/mol.)

    asked by Bree on April 7, 2013
  96. chemistry

    Could someone help me with these problems? 1. Why is it advantageous to choose a solvent with a large value for k(fp)? I don't really know 2. Why is it not necessary to wait for an entire sample of water to freeze in order to determine its freezing point?

    asked by Karthik on March 4, 2009
  97. Math

    a. Since the purpose of an ice cube is to keep a drink cold, is it better for an ice cube to have a high volume or a low volume? I think it would better for a cube to have a high volume. Can you please check am i correct if Im not can you explain.

    asked by Anastasia on April 13, 2016
  98. chemistry

    a solution is prepared by mixing 2.17g of an unknown non-electrolyte with 225.0g of chloroform. The freezing point of the resulting solution is -64.2 C . The freezing point of pure chloroform is -63.5 C and its kf= 4.68C m^-1 . What is the molecular mass

    asked by hershi on February 10, 2014
  99. physics

    a 9.0 g ice cube at -10 C is put into a thermos flask containing 100 cm^3 of water at 20 C. by how much has the entropy of the cube-water system changed when the equilibrium is reached? the specific heat of ice is 2220 J/kg K.

    asked by Jarad on September 19, 2010
  100. phy

    A cube of ice is taken from the freezer at -7.5°C and placed in a 101 g aluminum calorimeter filled with 282 g of water at room temperature of 20°C. The final situation is observed to be all water at 16°C. What was the mass of the ice cube?

    asked by ami on December 2, 2010