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Homework Help: Finding the mass of iron using the heat equations

  1. Nov 11, 2014 #1
    1. The problem statement, all variables and given/known data
    Calculate themass of iron at 100C that causes 20.0 kg of water to change temperature from 16C to 18C. C of iron is 460 J/kg C. The C for water is 4190.

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Nov 11, 2014 #2
    What's the final temperature of the iron? What was the temperature change of the iron?

  4. Nov 11, 2014 #3
    That's my main issue right now because that is not given to me and I am having a hard time trying to figure how one would do that without the mass being given.
  5. Nov 12, 2014 #4
    If you put something hot in contact with something cold and let them equilibrate with one another, do they (a) reach different final temperatures or (b) reach the same final temperature?

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