1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Whats the materials specific heat capacity?

  1. May 13, 2003 #1

    Dx

    User Avatar

    Hello,

    150kcal of heat raises the temp of 2.0kg of material by 400 degrees F. Whats the materials specific heat capacity?

    I cam up with 1.35 kcal/kg degrees C. is this correct?

    Thanks!
    Dx :wink:
     
    Last edited by a moderator: Feb 4, 2013
  2. jcsd
  3. May 13, 2003 #2

    Tom Mattson

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    Dx,

    That's not what I get. Can you show me what you did?

    Thanks,
     
  4. May 13, 2003 #3

    Dx

    User Avatar

    I used some substitution

    No problem, Tom! I meant to say .34 kcal/fg oC was my answer sorry thats another problem i am working on but i got it wrong anyways, lol.

    I used the formula [del]Q = mc [del]T and substituted.
    c = 150kcal / (2kg)* (190oC) =
    .34 kcal

    i figured it was .34 since when i converted from F to C i rounded the number so then I usd scientific notation to conclude to this answer.
    I am sorry but I have reworked this problem many times erasing and adding to it so excuse me if its not exact but you can see I am really trying here.
    Thanks!
    Dx
     
  5. May 13, 2003 #4

    Tom Mattson

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    OK, that's what I got too.

    I was thinking you had made a mistake converting ΔTF to ΔTC (because you have to multiply by 5/9), but then I reworked the problem by making that mistake, and I still did not get your answer.

    Oh well, that's cleared up now.
     
  6. May 13, 2003 #5

    Dx

    User Avatar

    TY Tom

    Just wanted to say thanks!
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Whats the materials specific heat capacity?
  1. Specific heat capacity (Replies: 9)

Loading...