physics

7150/(33.5e4) = g ice doesn't work.
Am I calculating incorrectly?

heat of fusion for water is 334 J/g. You want it in J/g since q is given in the problem in J. The answer will be in units of grams of ice. You will need to change to kg since the problem asks for it in kg.

Should I get 0.0214 kilograms? Because this answer is listed as incorrect.

q=heat of fusion x g ice
You now q. You know heat of fusion (or can look it up). Solve for g ice.

A Carnot engine uses a hot reservoir consisting of a large amount of boiling water and a cold reservoir consisting of a large tub of ice and water. When 7150 J of heat is put into the engine and the engine produces work, how many kilograms of ice in the tub are melted due to the heat delivered to the cold reservoir?


I get the same answer you have. Bob Pursley is on-line but away from his computer at the moment. I will email this to him and let him take a look at it. I don't know exactly when he will be back.

First determine the efficiency:

efficiency= (373-273)/373= .268

That means that 1-.268 is waste heat

Now if 7150J is put into the engine, some is delivered as work, and the rest is waste delivered to the ice.

MassIce melted= (1-.268)7150J/(334J/Kg)

  1. 👍 0
  2. 👎 0
  3. 👁 82
asked by Ann

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry - Heat of Fusion of Ice

    Conclusion question(s) from a lab we did to find the heat of fusion of ice: Does the value obtained for the molar heat of fusion depend on the volume of water used? Does it depend on the mass of ice melted? Does it depend on the

    asked by J.M. on October 1, 2006
  2. 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

    asked by sandhya on June 29, 2010
  3. Chemistry

    A quantity of ice at 0.0 degrees C was added to 33.6 of water at 21.0 degree C to give water at 0.0 degrees C. How much ice was added? The heat of fusion of water is 6.01 kJ/mol and the specific heat is 4.18 J/(g * degrees C) q =

    asked by Lauren on February 4, 2008
  4. physics

    The wattage of a commercial ice maker is 226 W and is the rate at which it does work. The ice maker operates just like a refrigerator and has a coefficient of performance of 3.90. The water going into the unit has a temperature of

    asked by angie on December 1, 2012
  5. PHYSICS

    The wattage of a commercial ice maker is 226 W and is the rate at which it does work. The ice maker operates just like a refrigerator and has a coefficient of performance of 3.90. The water going into the unit has a temperature of

    asked by HELP on December 1, 2012
  6. PHYSICS

    The wattage of a commercial ice maker is 226 W and is the rate at which it does work. The ice maker operates just like a refrigerator and has a coefficient of performance of 3.90. The water going into the unit has a temperature of

    asked by ag on December 1, 2012
  7. Chemistry

    I need help calculating Heat of fusion for a calorimeter experiment: I know that Q(melt): 8350.46 J, m(ice): 26.39g and m(hot water): 51.93g. Please help me set it up. Hf known is 6.02kj/mol. Answer is in J/g(ice).

    asked by Ally on November 19, 2014
  8. Chemistry

    Calculate the heat released when 42.0 g of water at 35.0 degrees Celsius is converted to ice at -5.0 degrees Celsius. The specific heat of ice is 2.03 J/(g C), the molar heat of fusion of ice is 6010 J/mol, and the specific heat

    asked by Kiana on April 22, 2016
  9. Physics

    An ice cube of mass 100 g and at 0C is dropped into a Styrofoam cup containing 200 g of water at 25C. The heat of fusion of ice is 80 cal/g and the specific heat capacity of water is 1.0 cal/g C°. Assuming the cup doesn't

    asked by DariaV on July 28, 2019
  10. physics

    A 49-g bullet traveling at 290m/s penetrates a block of ice at 0∘C and comes to rest within the ice.Assuming that the temperature of the bullet doesn't change appreciably, how much ice is melted as a result of the collision? The

    asked by Anonymous on June 4, 2014

More Similar Questions