chemistry

posted by .

How many calories must be supplied to 59 g
of ice at −6 C to melt it and raise the temperature of the water to 61 C? The specific heat of ice is 0.49 kcal/kg · K and of water is 1 kcal/kg · K; the heat of fusion of water is 79.7 kcal/kg, and its heat of vaporization is 418 kcal/kg.
Answer in units of kcal

  • chemistry -

    Use two formulas.
    Within a phase:
    q=mass x specific heat x (Tfinal-Tinitial)

    phase change:
    mass x heat vap at boiling point
    mass x heat fusion at melting point

    For example:
    at melting point of ice. To change solid ice at zero C to liquid at zero C.
    q = 59 g ice x heat fusion - 59 x 80 cal/g = ?

    From ice at zero to water 100 C
    q = mass x specific heat x(Tfinal-Tinitial) = 59 g x 1 cal/g x (100-0) = ?

    Then add all of the q amount to obtain total q the divide by 1000 to convert to Kcal.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physcial science

    When 1 kg of ice at 0 degrees Celsius absorbs 80 kilocalories of heat, the ice undergoes a) a change of state b) a loss of energy c) a rise in temperature d) an increase in volulme The heat of fusion of water is 80 kcal/kg. That means …
  2. math

    Problem The latent heat of fusion (solid become liquid) for ice is 79.8 cal/gram. How much ice can we melt with 1000 calories of heat?
  3. math

    If i place a dish of ice outside in the sun, The ice has a mass of 0.59 kg and a surface area of 0.039 m2. Assuming that the ice is originally at 0 °C and using my answer for part b, which was 1370w/m^2 * 49 * 0.039m^2 = 26.18 watts, …
  4. chemistry

    The specific heat of ice is 0.5 calories/gram. 60 grams of ice will require _____ calories to raise the temperature 1°C. so i just do 0.5/60 ?
  5. Chemistry HEAT OF FUSION

    What amount of energy is required to melt a 26.9 g piece of ice at 0oC?
  6. Physics

    (a) How much heat in kcal must be provided for a 0.853 kg block of lead to raise the temperature of 0.015 kg block of ice from -5ºC to 0ºC?
  7. physics

    A 40-g block of ice is cooled to −71°C and is then added to 590 g of water in an 80-g copper calorimeter at a temperature of 27°C. Determine the final temperature of the system consisting of the ice, water, and calorimeter. …
  8. physics

    A 40-g block of ice is cooled to −71°C and is then added to 590 g of water in an 80-g copper calorimeter at a temperature of 27°C. Determine the final temperature of the system consisting of the ice, water, and calorimeter. …
  9. physics

    An ice bag containing 0°C ice is much more effective in absorbing heat than one containing the same amount of 0°C water. (a) How much heat in kcal is required to raise the temperature of 0.700 kg of water from 0°C to 27.0°C?
  10. Physics

    A 0.0475 kg ice cube at −30.0°C is placed in 0.577 kg of 35.0°C water in a very well insulated container. The latent heat of fusion of water is 334 kJ/kg, the specific heat of ice is 2092 J/(kg · K), and the specific heat …

More Similar Questions