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  1. #1
    newb programmer 文偉立's Avatar
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    Default Chemistry project

    I hate Chemistry ^^

    Please help me with this project. It's HARD

    Project due January 3rd, 2006


    =================================================================================================
    Calorimetry: the amount of heat released or absorbed during a chemical reaction

    q=mCΔT
    q=heat transferred
    m=mass of the substance
    C=specific heat of capacity of the substance
    ΔT= (Final Temperature - Initial Temperature)

    You are a nutritionist and your job is to determine the energy content of a new food that has been placed on the market. You are sent a 10.0 gram sample of the food. In your experiment, the temperature increased from 21°C to 86°C.

    Fully determine the type of experimental setup you would have used in this experiment. Include a labeled drawing of the experimental device.

    Show all steps in the calculation.

    Record your answer to the correct amount of significant figures

    ---

    Additional notes:
    -Assume the mass of water is 100.0 grams
    -Specific heat capacity of water is 4.18 J/g⋅°C

    ==================================================================================================


    So...that is my project outline. I have NO idea what to do. So far, from assumption and what I've learned in class, I've figured

    q=(10.0 grams)(C)(65°C)

    But the thing is I don't know what else is necessary to complete the equation because that is all he gave us. So, anyone able to help?


    Edit #1: *Crickets chirping* o.o :(
    Edit #2: *Jeopardy Song plays* >.> Wow, is it really that hard?
    Last edited by 文偉立; December 28, 2005 at 05:38 AM.
       

  2. #2
    FinalStrike
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    Default Re: Chemistry project

    You're saying that you have a project to do. And you want US to do the work for you? Please...that's called "CHEATING".

  3. #3
    newb programmer 文偉立's Avatar
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    Default Re: Chemistry project

    Quote Originally Posted by FinalStrike
    You're saying that you have a project to do. And you want US to do the work for you? Please...that's called "CHEATING".
    How about the fact that I fail if I don't get it. Plus the fact I've been TRYING. A little help wouldn't hurt you know.

  4. #4
    buried in my thoughts Lost Heaven's Avatar
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    Re: Chemistry project

    Come on, try harder. You can do it yourself. You're almost making yourself look stupid because you can't figure it out yourself.

  5. #5
    Iron Tomato
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    Default Re: Chemistry project

    To the two people that posted in here: Just stop. You're also making yourselves look stupid. If you post in here, and don't help him, then it just means that you don't get it either.

    People should be little more helpful sometimes.

    Anyways, I dunno what to do. Try asking a friend that might know, or if you know anybody that's good at science, they might know. Sorry.

  6. #6
    newb programmer 文偉立's Avatar
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    Default Re: Chemistry project

    I went to go do my History Project today and I'm quite tired. Plus, you bloody ingrates who claim I'm worthless or idiotic because I can't do this problem are just hypocritical bastards. If you don't want to help and only have something to say, then shut up. I ask for help. I don't want you to DO IT FOR ME.

    I've done what I've could on my behalf and you believe I don't still spend moments to sit and contemplate on a solution only to walk in circles? That's why I ask for aid. A little common courtesy or a gesture that you're doing the whole project, is that what you imply?! >8*(

  7. #7
    http://j.mp/jIANdM mz. eggsy's Avatar
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    Default Re: Chemistry project

    Hm. Actually, this is an open and shut problem.

    C=specific heat (the water).
    C=4.18 J/goC

    Completed equation: q=(10.0 grams)(4.18 J/goC)(65C)

    Just solve it. <.<

  8. #8
    newb programmer 文偉立's Avatar
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    Default Re: Chemistry project

    Quote Originally Posted by Master T
    Hm. Actually, this is an open and shut problem.

    C=specific heat (the water).
    C=4.18 J/goC

    Completed equation: q=(10.0 grams)(4.18 J/goC)(65C)

    Just solve it. <.<
    If only it were that simple. Is it really that or is it that 4.18 J/gC is the specific heat of H20. If it were just water, It wouldn't be too hard but they specified it as food. I don't know. Am I complicating things or is that really the answer?

  9. #9
    http://j.mp/jIANdM mz. eggsy's Avatar
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    Default Re: Chemistry project

    There isn't a specific heat for "food" because "food" is a varied physical mixture. I think you're making it harder than it is.

  10. #10
    newb programmer 文偉立's Avatar
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    Default Re: Chemistry project

    Quote Originally Posted by Master T
    There isn't a specific heat for "food" because "food" is a varied physical mixture. I think you're making it harder than it is.
    Okay...Hmm...well, from first assumption, maybe but what my chemistry teacher said, he stated "You have to think" for us to solve this problem. Does that mean the answer is much more complex than just that answer?

  11. #11
    http://j.mp/jIANdM mz. eggsy's Avatar
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    Default Re: Chemistry project

    I think he's just trying to spook you, but I wouldn't know. That's all I'm getting from the problem.

  12. #12
    newb programmer 文偉立's Avatar
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    Default Re: Chemistry project

    Thanks. I'll review the problem once more. See ya around and I'll keep this thread open until I go back to school and reveal the final answer.

  13. #13
    Hellpark
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    Default Re: Chemistry project

    I wont mind if you fail.

  14. #14
    newb programmer 文偉立's Avatar
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    Default Re: Chemistry project

    Quote Originally Posted by Hellpark
    I wont mind if you fail.
    I would -_-

  15. #15
    Iron Tomato
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    Default Re: Chemistry project

    Quote Originally Posted by Hellpark
    I wont mind if you fail.
    I wouldn't mind if you were banned again.

    Boxdude (what font/language do I need to read that?!), even if what Master T suggested isn't the correct answer, there'd still at least be part marks for trying, or making an attempt. And that alwasy beats a 0 on something.

 

 
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