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    Excess of magnesium is added to 100cm3 of 1.0mol dm-3 copper (ll) sulfate, the temp rises by 46.3C.

    a) calculate the minimum quantity of Mg needed to ensure it is in excess.
    b) calculate the temp change if only 0.8g is added.


    I've done part a but does anyone have any idea on how I'm meant to work out b?
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    (Original post by lummzie)
    Excess of magnesium is added to 100cm3 of 1.0mol dm-3 copper (ll) sulfate, the temp rises by 46.3C.

    a) calculate the minimum quantity of Mg needed to ensure it is in excess.
    b) calculate the temp change if only 0.8g is added.


    I've done part a but does anyone have any idea on how I'm meant to work out b?
    Use the data given to find the energy change per mol of magnesium used.

    Now scale down to only 0.8/24 moles
 
 
 
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