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Homework Help: AS Practise Chemistry coursework question

  1. Mar 18, 2012 #1
    1. The problem statement, all variables and given/known data

    Write an equation in words to show relationship between mass concentration, molar concentration and molar mass and give a short explanation.

    2. Relevant equations

    I understand that the equation is:

    molar mass = Mass concentration/Molar concentration

    3. The attempt at a solution

    Where it says 'give a short explanation', what exactly does it want me to say? Does it have something to do with the equation no. moles = Mass/Mr?
  2. jcsd
  3. Mar 18, 2012 #2


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    Staff: Mentor

    I would put the equation in the form

    [tex]\text{molar concentration} = \frac{\text{mass concentration}}{\text{molar mass}}[/tex]

    in which case it is much more obvious why it is related to the other equation you listed.
  4. Mar 18, 2012 #3
    Thank you very much!

    I'm not too good at all this terminology, so could you help me a bit more?

    Does rearranging the equation to what you've stated mean that it is the same as the equation no. moles = Mass/Mr? Is this the 'short explanation' the question requires?

    Thanks for the help,
  5. Mar 18, 2012 #4


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    Staff: Mentor

    It is not the same but the analogy is obvious. You may try to write both equations with units and see how they differ.
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