chemistry

posted by .

in a freezer, 150g of water at 0degrees celcius is placed in an ice cube tray. how much energy, in kilocalories, must be removed to form ice cubes at 0 degrees celsius

  • chemistry -

    q = mass x heat fusion.
    q = 150g x 79.8 cal/g = ? calories. Convert to kcal.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. AP CHEM

    An ice cube tray contains enough water at 22.0 C to make 18 ice cubes that each have a mass of 30.0g. The tray is placed in a freezer that uses CF2CL2 as a refridgerant. The heat of vap of CF2CL2 is 158 J/g. What mass of CF@CL2 must …
  2. chemistry

    Five kg of ice cubes are moved from the freezing compartment of a refrigerator into a home freezer. The refrigerator's compartment is kept at -4.0 celsius. the home freezer is kept at -17 celsius. How much heat does the freezer's cooling …
  3. Physics

    A cube of ice is taken from the freezer at -8.5 degrees celsius and placed in a 100 gram aluminum calorimeter filled with 300 grams of water at room temperature of 20 degrees celsius. the final situation is observed to be all water …
  4. Melting Ice Chemistry

    You have an ice cube (H2O) that weighs 5 grams and is at a temperature of -10 degrees Celsius. How much heat energy(in joules) is required to melt the ice cube and raise the temperature of the resulting liquid water to 15 degrees Celsius?
  5. Melting Ice Chemistry

    You have an ice cube (H2O) that weighs 5 grams and is at a temperature of -10 degrees Celsius. How much heat energy(in joules) is required to melt the ice cube and raise the temperature of the resulting liquid water to 15 degrees Celsius?
  6. Melting Ice Chemistry

    You have an ice cube (H2O) that weighs 5 grams and is at a temperature of -10 degrees Celsius. How much heat energy(in joules) is required to melt the ice cube and raise the temperature of the resulting liquid water to 15 degrees Celsius?
  7. Physical Science

    An ice tray with 175 g of water at 30°C is placed in a freezer at –9°C. How much energy must be removed from the water to lower its temperature to the freezing point?
  8. Chem

    A 135g sample of ice is in a freezer at -21 degrees celsius. It is removed from the freezer and allowed to melt and the resulting water warms up to the room temperature of 23 degrees celsius. How much energy is absorbed by the 135g …
  9. Chemistry - Energy: Phase Changes

    An ice cube at 0 degrees Celsius is placed in a pouch and dropped into 30.0g of water in a cup at 45 degrees Celsius. The ice cube melts and the resulting water warms up. The lowest temperature reached by the 30.0g of water in the …
  10. Physics

    To make ice cubes you fill am ice tray with 150g of water at 20°C. How much energy must be removed from the water to create ice cubes at a final temperature of -10C

More Similar Questions