PortalAhmed IV wrote:Becasue Im not a failure. It's true that it is currently hard for me but I'm no quitter.
don't push yourself to hard man, sometimes you need to stop and take a second look
+4
jj16802
Doc
Fangy
preid1220
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What the hell are teachers thinking?
preid1220- NH Moderator
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don't push yourself to hard man, sometimes you need to stop and take a second look
Ahmed- NH Admin
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I want to be a pharmacist.
Doc- NH Member
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Ahmed IV wrote:I feel like crying
I did so freaking horrible first marking period in AP Chem
I got a freaking 80 (Really an 82 which got lowered down to a 80)!
I need serious help!
Sayf please tell me the difference between a Bomb Calorimetry and a Constant-Pressure (Coffee-Cup) Calorimetry
Is q(soln) the same as Delta H?
What is enthalpy?
PLEASE ANSWER. I am lost in this area of Chem!!
P.S.: Do I need to memorize the formulas of the 2 calorimetry questions and the Specific heats of the substances?
specific heat will usually either be given to you, or you will have to calculate it .. and yeah, you're going to have to memorize those formulas ... no way around it ...
and no, q(soln)is not the same as ΔH ... but -qsoln = qrxn and qrxn/mol = ΔHrxn
ΔH = the change of enthalpy ...
Also ΔH = qp
H = enthalpy
this should help ... just read the book and learn how to do the problems lol
Ahmed- NH Admin
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Sayfullah wrote:Ahmed IV wrote:I feel like crying
I did so freaking horrible first marking period in AP Chem
I got a freaking 80 (Really an 82 which got lowered down to a 80)!
I need serious help!
Sayf please tell me the difference between a Bomb Calorimetry and a Constant-Pressure (Coffee-Cup) Calorimetry
Is q(soln) the same as Delta H?
What is enthalpy?
PLEASE ANSWER. I am lost in this area of Chem!!
P.S.: Do I need to memorize the formulas of the 2 calorimetry questions and the Specific heats of the substances?
specific heat will usually either be given to you, or you will have to calculate it .. and yeah, you're going to have to memorize those formulas ... no way around it ...
and no, q(soln)is not the same as ΔH ... but -qsoln = qrxn and qrxn/mol = ΔHrxn
ΔH = the change of enthalpy ...
Also ΔH = qp
H = enthalpy
this should help ... just read the book and learn how to do the problems lol
Well I would except that the book just gives examples of 2 very EASY questions of the type of questions....but their HW questions are hard.
Also they explain very bad.
Last question: What is the difference between ΔH and ΔE?
Also lets say a reaction has a ΔH of +123 KJ
Its enthalpy would be -123 KJ, correct (since energy is conserved)?
Doc- NH Member
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just read the book ... I hardly remember this stuff ...
Ahmed- NH Admin
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The book doesn't explain calorimetry very good. 
Well thanks anyways, I took the quiz and I think I did pretty good. But I still have a test next week.
Well thanks anyways, I took the quiz and I think I did pretty good. But I still have a test next week.
preid1220- NH Moderator
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it's ok Ahmed, just spend some time studying
Ahmed- NH Admin
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Ok that's good advice Pried 
Doc- NH Member
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studying is useless when the class average is 40%!!! in other words, my chem teacher is retarded ... shouldve taken the 8 am TR class but nooooo .. i didnt want to wake up early twice a week ...
jj16802- NH Moderator
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thats the human race for ya sayf
Doc- NH Member
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who the hell asks questions that aren't even in the book??
Ahmed- NH Admin
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Sayfullah wrote:who the hell asks questions that aren't even in the book??
My chem teacher (sometimes)
Doc- NH Member
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college is all about your teacher ...
Doc- NH Member
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ok someone explain this:
on the latest chem test ... the average was 50 .. and someone actually scored 100 (i think it was some girl who needed just this class to go to med school) and the lowest score was a 0 ... WTF????
on the latest chem test ... the average was 50 .. and someone actually scored 100 (i think it was some girl who needed just this class to go to med school) and the lowest score was a 0 ... WTF????
preid1220- NH Moderator
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Sayfullah wrote:ok someone explain this:
on the latest chem test ... the average was 50 .. and someone actually scored 100 (i think it was some girl who needed just this class to go to med school) and the lowest score was a 0 ... WTF????
it's not impossible
Doc- NH Member
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preid1220 wrote:Sayfullah wrote:ok someone explain this:
on the latest chem test ... the average was 50 .. and someone actually scored 100 (i think it was some girl who needed just this class to go to med school) and the lowest score was a 0 ... WTF????
it's not impossible
???
but does it make sense???
some kid got a 5 too lol
Egyptian Gazelle- NH Member
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There are some really really dumb people in this world and some really really smart people in this world......does it make sense now?Sayfullah wrote:ok someone explain this:
on the latest chem test ... the average was 50 .. and someone actually scored 100 (i think it was some girl who needed just this class to go to med school) and the lowest score was a 0 ... WTF????
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