Reaction Mechanisms - 3 views
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ChemPaths UW-Madison on 23 Oct 09This page now has the correct equations for the example.
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. In the figure the tangents at t = 15 shave been drawn
The Rate Equation - 2 views
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From "...tangents at t=15 SHAVE been drawn" to "...tangents at t=15 HAVE been drawn"
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We say that the order of the reaction with respect to component A is a, while the order with respect to B is b. The overall order of the reaction is a + b.
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When this happens the reaction is said to be zero order in H3O+, because (cH,sub>3O+</sub>)0 = 1
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notation in parentheses should be fixed
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Thanks! This has been fixed - as such this highlight may not show up anymore (the text of the highlight has been changed, so Diigo won't be able to find it). Also: the correction for the first part is "tangents at t=15 s have been drawn" - don't forget your units!
Chemistry 2009 - 2 views
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Nobel Prize in Chemistry, 2009
pH and pOH - 1 views
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Taking the antilog of both sides, we have
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Is there a typo in the following equation?
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There is a very simple relationship between the pH and the pOH of an aqueous solution at 25°C. We know that at this temperature
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Isn't the second "Kw" in the following equation redundant?
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Properties of Alkanes - 0 views
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Updated including chiral centers example.
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Updated page to include chiral carbons example.
Internet Explorer 8: Home page - 0 views
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If you are having trouble viewing portions of the online text, you may need to upgrade to the most recent version of IE for PC. This corrects a glossary pop-up box issue.
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Upgrade your browser to IE 8
Open Forum - 4 views
All students can use this forum to discuss, announce study sessions, share questions, or anything you think of. Feel free to make other forums.
ChemPaths: Learning to Meander - 0 views
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Course Textbook
Precipitation Reactions and Solubility - 0 views
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Solubility Rules can be found here.
The Covalent Bond - 0 views
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The orbital is centered between the two atoms, so electron density is highest there. Again, as said above, this reduced the total energy of the system, and electrons in this orbital will thus lead to a covalent bond between the two atoms. This orbital is referred to as a bonding orbital.b)With the LUMO molecular orbital of H2 there is zero electron density between the two hydrogen atoms. There is a node in the orbital exactly the two atoms.
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Isn't this a contradiction? The top portion says the highest density is between the two atoms, and the bottom part says there is zero electron density between the two atoms... -
In part (b), the question asks about the LUMO - or the Lowest (Energy) Unoccupied Molecular Orbital. It is where the 3rd electron would go, if you tried to put it into this molecule. Thus what the last sentence in this solution states: "If electrons occupied this orbital, it would lead to the dissolution of the covalent bond." Does that make sense?
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Analysis of Compounds - 0 views
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A combustion train. H2O and C2O, produced by combination of O2 with H and C in the sample, are selectively absorbed by tubes containing Dehydrite [Mg(ClO4)2•3H2O] and ascarite (NaOH on asbestos).
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"CO2" instead of "C2O"
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Thanks! This has been fixed - as such this highlight may not show up anymore (the text of the highlight has been changed, so Diigo won't be able to find it).
Chemistry Moodle Site - 0 views
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This is the Chemistry Moodle Site for Chem 109H.
Introduction - 0 views
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This is interesting. I did not know there was an earth scientist's periodic table.
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Balancing Chemical Equations - 0 views
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2NaMnO4 + H2O2 + 3H2SO4 → 2MnSO2 + Na2SO4 + 3O2 + 4H2O
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Shouldn't the coefficient on Oxygen gas on the product side be a "10" instead of a "3"?
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2NaMnO4 + H2O2 + 3H2SO4 → 2MnSO2 + Na2SO4 + 6O2 + 4H2O
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I counted 22 Oxygen atoms on the reactant side, and so shouldn't the red "6" be a "5" to equal 22 Oxygen atoms on the product side? (Sorry to bother the editor again)
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Thanks! This has been fixed - as such this highlight may not show up anymore (the text of the highlight has been changed, so Diigo won't be able to find it). Also - the correction would be for the red 3 to become a 6 (not a 10 as you mentioned).
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Thanks for following up on this. Apparently the Optical Character Recognition software missed the fact that this equation should be written with "SO4" not "SO2" anions - thus the original coefficient was correct. The sulfate subscripts have been changed and the original coefficient of "3" has been reinstated to its proper place. Thanks again.
Using Chemical Equations in Calculations - 0 views
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invo1ving
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typo: "involving"
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Thanks! This has been fixed - as such this highlight may not show up anymore (the text of the highlight has been changed, so Diigo won't be able to find it).
Equations and Mass Relationships - 0 views
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Similarly, the ratio of the amount of[[Image:]]produced to the amount of[[Image:]]
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Images are missing
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Thanks! This has been fixed - as such this highlight may not show up anymore (the text of the highlight has been changed, so Diigo won't be able to find it).
The Nature of Electromagnetic Radiation - 0 views
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Figure 1
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Here's a moving visual: http://www.physchem.co.za/OB12-ele/Graphics/wavetrain.gif
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Measurement of Atomic Weights - 0 views
Atomic Structure and Isotopes - 0 views
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When particles are emitted into a closed container, they slowly pick up electrons from their surroundings, and eventually the container becomes filled with helium
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I wonder if this is how Helium gas is industrially manufactured
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