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Calculate the enthalpy of the reaction

  1. Nov 12, 2008 #1

    a.a

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    1. The problem statement, all variables and given/known data

    The reaction between 0.045 g of calcium with an excess of water was carried out in an ice calorimeter as used in this lab. The volume of water in the calorimeter decreased by 0.18 mL during the reaction
    a) Write the equation for the reaction which occurs. Is it a redox reaction?
    b) Calculate the enthalpy of the reaction (in kJ/mol). Show all steps of calculation.


    2. Relevant equations

    it was given on the previous page that m = delta Volume * (-11.05)

    3. The attempt at a solution

    I got part a, but im having a lot of trouble with part b. im not even sure where to start.

    m = (-.18)(-11.05) = 2.0

    Where do we go form here, to find the enthalpy?
     
  2. jcsd
  3. Nov 12, 2008 #2

    Borek

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    Staff: Mentor

    Re: Enthalpy

    What is m?
     
  4. Nov 12, 2008 #3

    a.a

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    Re: Enthalpy

    mass
     
  5. Nov 12, 2008 #4

    Borek

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    Staff: Mentor

    Re: Enthalpy

    Mass of what?
     
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