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    My problem is I dont know what to do, its not the integration that I need help with; if someone can help me through the question i.e. where to start?

    Thanks.
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    Simply evaluate the integral:

    \displaystyle \int_{300}^{900} (258.2 + 5.82\times10^{-2}T - 6.28\times 10^{-6}{T^{-2}})\ dT
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    (Original post by EierVonSatan)
    Simply evaluate the integral:

    \displaystyle \int_{300}^{900} (258.2 + 5.82\times10^{-2}T - 6.28\times 10^{-6}{T^{-2}})\ dT
    after doing so, i ended up with 1.62x10^5 joules per kelvin per mole (3s.f.) {i think thats the units)

    that can't be the right answer! can it? helpppp me my fellow chemist!!!
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    (Original post by J_Alom)
    after doing so, i ended up with 1.62x10^5 joules per kelvin per mole (3s.f.)

    that can't be the right answer! can it? helpppp me my fellow chemist!!!
    It's an enthalpy calculation so you've got those units wrong - would the value look more reasonable in kJ mol-1? :p:

    If you look at the major contributor then 258.2(900-300) = 154920 which isn't far off from what you have
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    (Original post by EierVonSatan)
    It's an enthalpy calculation so you've got those units wrong - would the value look more reasonable in kJ mol-1? :p:

    If you look at the major contributor then 258.2(900-300) = 154920 which isn't far off from what you have
    ohhhhhh; thanks for that!
 
 
 
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