Physics

posted by .

"Luke Skywalker mixes 250g of hot water (75 deg C) with 500g of cool water (15 deg C). What is the final temperature of the water?"

If someone could just give me a formula, I'd be fine. :)

  • Physics -

    heat lost by hot water + heat gained by cold water = 0
    mass H2O x specific heat water x delta T + (mass H2O x specific heat water x delta T) = 0
    For delta T in each case substitute Tf - Ti (for Tf = final T and Ti = initial T). You will have only one unknown, namely Tf. Solve for that.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    600g of water is mixed with 20g of steam at 100 deg Celcius. What is the final temperature if the original temperature of the water is 25 deg Celcius
  2. physics

    500g of water at 40 deg C and 200g of a mixture of ice and water are combined. The final temperature is 10 deg C. How much of the original 200g mixture was ice?
  3. Physics

    An object of mass 7.0 kg falls through a height of 47.0 meters and, by means of a mechanical linkage, rotates a paddle wheel that stirs 0.670 kg of water. The water is initially at 5.5 deg C, What is the maximun possible temperature …
  4. Physics

    I'm trying to determine the specific heat of copper by experiment and I have a question about the change in temperature of the copper. If I take the copper out of boiling water at 100 deg. C and place it in water at 10 degrees C, the …
  5. Chemistry

    What is the final temperature when 50.0 g of Chromium at 15 deg. C (specific heat of Cr = 0.107 cal/g-deg.) is added to 25 ml of 45 deg.C water?
  6. Chemistry

    In order to raise the temperature of 5.0 Kg of water from 20 deg. C to 30 deg. C, a 2.0 kg iron bar is heated and then dropped into the water. What should the starting temperature of the bar be?
  7. physics

    A container of hot water at 80 deg C cools to 79 deg C in 15 seconds when it is placed in a room that is at 20 deg C. Use Newton's law of cooling to estimate the time it will take for the container to cool from 70 deg C to 69 deg C.
  8. physics

    A container of hot water at 80 deg C cools to 79 deg C in 15 seconds when it is placed in a room that is at 20 deg C. Use Newtons law of cooling to estimate the time it will take for the container to cool from 70 deg C to 69 deg C.
  9. Chemistry

    Will someone show me the formula or help me through working this question?
  10. Physics

    A 500 g sample of gold heated to 971.0 deg. C is placed in a calorimeter containing 220 g of water initially at 20.0 deg. C. If no heat is lost to the surrounding environment what will the final temperature of the water be?

More Similar Questions