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04-27-2010, 12:21 AM | #3961 | |
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04-27-2010, 01:04 AM | #3962 |
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04-27-2010, 08:40 AM | #3963 | |
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thanks I'll try it out when I have some more blank dvds lol I still remember most of that stuff. Are you guys using delta G and Q = MCdeltaT?
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04-27-2010, 08:47 AM | #3964 |
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Oh God, so glad I'm not in school anymore...that sounds terrible!
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04-27-2010, 08:55 AM | #3965 |
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04-27-2010, 08:56 AM | #3966 |
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what is it about. Do you have to memorize solubility rules? For example all nitrates are soluble except blah blah blah, etc
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04-27-2010, 09:04 AM | #3967 |
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yeah we do. i dont understand hess law. how they set up it from a singe chemical eqaution like CH4 + 202 ---> CO2 +2H2O. my teacher didnt explain it well. he confused me even more.
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04-27-2010, 09:08 AM | #3968 | |
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Ok so this is whats up. You have a final equation. You'll probably have 2-3 other equations you must manipulate in order to make it match up your final equation. You know what reactants and products are, right? You know the little 'yield' arrow that shows reactants going to products? Well according to Hess's law we are able to 'flip' the equations so that we can make the products into reactants and reactants into products. BUT, when you flip the equation you must also flip the sign on the value.. (Should be in kJ, correct?) Also, you may have to multiple the entire equation by a factor of 2,3,4, etc in order to match up your number of moles of reactants and products. If you keep manipulating the equation by multiplying and flipping signs, it should eventually lead you to the final equation. Make more sense?
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04-27-2010, 09:24 AM | #3969 |
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yeah a little bit. the manipulation part im having trouble with. ill probably give you a call. i have to go to trig right now. ill be back in 2 hours.
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04-27-2010, 09:59 AM | #3971 |
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04-27-2010, 01:00 PM | #3973 | |
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I love Chemistry..If I wasn't premed I'd want to be a chemist
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04-27-2010, 02:11 PM | #3976 |
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04-27-2010, 02:17 PM | #3977 |
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04-27-2010, 02:28 PM | #3978 | |
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04-27-2010, 02:35 PM | #3979 |
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sweetness. hopefully Blake's gtr is done so I can steal it
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04-27-2010, 03:31 PM | #3980 |
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04-27-2010, 03:32 PM | #3981 | |
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