Chemistry

How much heat energy, in kilojoules, is required to convert 63.0g of ice at −18.0 ∘C to water at 25.0 ∘C ?

  1. 👍 0
  2. 👎 0
  3. 👁 301
  1. You work this in stages.
    Within a phase it is
    q = mass x specific heat x (Tfinal-Tinitial). For example, for liquid water at zero C to boiling it will be
    q = mass H2O x specific heat liquid H2O x (100-0).
    Then at a phase change (from ice to liquid or from liquid to gas it is
    q = mass x heat fusion (for solid) or heat vaporization (for liquid to gas).
    Then add the parts to find the total.

    1. 👍 0
    2. 👎 0
  2. 234

    1. 👍 0
    2. 👎 0
    posted by qwefc

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    How much heat energy, in kilojoules, is required to convert 53.0 g of ice at -18.C to water at 25.0 C ?

    asked by Morgan on December 9, 2011
  2. chemistry

    How much heat energy, in kilojoules, is required to convert 37.0g of ice at −18.0 ∘C to water at 25.0 ∘C ?

    asked by liz on May 9, 2015
  3. Chemistry

    How much heat energy, in kilojoules, is required to convert 36.0g of ice at 18.0C to water at 25.0C

    asked by Ashley on January 30, 2013
  4. Chemistry

    How much heat energy, in kilojoules, is required to convert 48.0g of ice at −18.0 ∘C to water at 25.0 ∘C ? Please show all steps. i don't know where to start

    asked by Anna on December 9, 2014
  5. Chem

    How many kilojoules of energy are needed to convert 104 g of ice at -14.6 to water at 25.8°C? (The specific heat of ice at -14.6 is 2.01 J/g°C.)

    asked by just need set up on April 4, 2013
  6. Chemistry

    How many kilojoules of energy are needed to convert 104 g of ice at -14.6 to water at 25.8°C? (The specific heat of ice at -14.6 is 2.01 J/g°C.)

    asked by Cody on April 3, 2013
  7. Chemistry

    How many kilojoules of energy are needed to convert 104 g of ice at -14.6 to water at 25.8°C? (The specific heat of ice at -14.6 is 2.01 J/g°C.)

    asked by B on April 4, 2013
  8. Chem

    How many kilojoules of energy are needed to convert 104 g of ice at -14.6 to water at 25.8°C? (The specific heat of ice at -14.6 is 2.01 J/g°C.)

    asked by greg on April 4, 2013
  9. chem

    The heat of combustion of bituminous coal is 2.50 × 104 J/g. What quantity of the coal is required to produce the energy to convert 137.7 pounds of ice at 0.00°C to steam at 100.°C? specific heat (ice) = 2.10 J/g°C specific

    asked by Bogdanam on December 15, 2010
  10. Physics

    Assume the optimal coffee drinking temperature is 75°C, and further assume coffee has the same heat capacity and density as water. a. How much energy is required to raise the temperature of 1 cup (0.237 liters) of coffee

    asked by Steve on December 5, 2010

More Similar Questions