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    75g of Bovine Brain extract was heated from 277 K to 310 K at constant pressure by supplying 125 kJ of energy as heat. Calculate q, ?H and the heat capacity of the sample. The answer is 3788 J K-1. Any idea how to get there?? Thanks!
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    Hahaha whoever wrote that question is a legend! Where did you find it?
    Sorry, i've love to help but i've forgotten the formula :confused:
    Once you find that just rearrange it and put in what you know.
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    (Original post by KissMyArtichoke)
    Hahaha whoever wrote that question is a legend! Where did you find it?
    Sorry, i've love to help but i've forgotten the formula :confused:
    Once you find that just rearrange it and put in what you know.
    haha got it off my teacher! :s thanks anyway!
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    (Original post by <3 tan xxxxx)
    haha got it off my teacher! :s thanks anyway!
    I'll look at this tomorrow if you still need help, I just need to dig up my old AS book.
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    E=mcdT

    so you've got the mass, the temperature change and the energy, specific heat is just a simple substitution.

    for dH you'd then need the Mr and mass of the fuel.
 
 
 
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