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Specific heat capacity

  1. Apr 17, 2006 #1
    Hey ya. I need some help with specific heat capacity. :cry: Does anyone know where i can find a table of specific heat capacity values? :redface: Also what are the units of specific heat capacity? do you have to measure the temperature in kelvin or degrees? Plz help, o:) Thanx
     
  2. jcsd
  3. Apr 17, 2006 #2
  4. Apr 17, 2006 #3
    excellent, thanx alot. will have a read through them.
     
  5. Apr 17, 2006 #4
    A table of specific heat values can usually be found in the appendix of a chemistry textbook.

    Or, click here and here

    The SI units of specific heat are
    [tex]\frac{\text{J}}{\text{kg} \cdot \text{K}}[/tex]
    (In SI we use Kelvin :wink:)
     
    Last edited: Apr 17, 2006
  6. Apr 17, 2006 #5
    I had a look at the sites, and one the table it said J/kg/oC
    or J/kg/K. Does that meant then that as long as you keep to the same unit, you should get the same answer?
     
  7. Apr 17, 2006 #6
    I have just worked out my specific heat capacities using both kelvin and oC and i got different answers. I got 954 J/kg/oC and 3968 J/Kg/K. When looking at the tables aluminium (which i think the metal is) has a specific heat capacity of around 900 J/Kg/K, but my kelvin answer is not near that!! any suggestions on what i may be doing wrong?
     
  8. Apr 17, 2006 #7

    Hootenanny

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    How have you worked them out? Perhaps you could show an example calculation? If you are looking at change in temperature remember that the size of 1 oC is the same as 1K.

    Regards,
    ~Hoot
     
  9. Apr 17, 2006 #8
    Thanx hootenanny. Of course, the change in temperature is the same in both oC and kelvin. Excellent!! I was working out the change in temperature and then adding on 273 for kelvin!! woops!!! YAY. Thank you sooooo much. I'm not confused any moure!
     
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