1. Limited time only! Sign up for a free 30min personal 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!

Molar Specific Heat

  1. Nov 20, 2009 #1
    1. The problem statement, all variables and given/known data
    A certain substance has a mass per mole of 55 g/mol. When 284 J is added as heat to a 32.0 g sample of this material, its temperature rises from 22.0°C to 39.5°C

    And I know that the specific heat of this substance is 507.14 J/[kg(K)]

    2. Relevant equations

    Q = mc[tex]\Delta[/tex]T

    3. The attempt at a solution

    55 g/mol * (1/32g) = 1.71875mol

    284J/[(1.71875mol)/(39.5-22)] = 9.44 J/[mol(K)]

    however..this is wrong and now I'm not sure where to go..help pleeeease!
  2. jcsd
  3. Nov 21, 2009 #2


    User Avatar
    Homework Helper

    I assume you used the information to find that.

    [tex]c= 507.14 \frac{J}{kgK}[/tex]

    for the substance, 1 mol has how much mass in kg?
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Molar Specific Heat
  1. Molar specific heat (Replies: 1)

  2. Molar Specific Heat (Replies: 5)