Search found 16 matches
- Sat Mar 18, 2017 1:26 pm
- Forum: *Amines
- Topic: Chapter 2 #35 and #44
- Replies: 2
- Views: 1461
Re: Chapter 2 #35 and #44
I believe that the one is extra information aka the one could be on both molecules or none.
- Thu Mar 02, 2017 1:06 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3683183
- Thu Feb 23, 2017 12:44 pm
- Forum: Second Order Reactions
- Topic: Limiting Step
- Replies: 7
- Views: 1126
Re: Limiting Step
The slow step is always the limiting step.
- Sun Feb 19, 2017 12:38 pm
- Forum: Reaction Mechanisms, Reaction Profiles
- Topic: Intermediates in Reactions
- Replies: 2
- Views: 475
Re: Intermediates in Reactions
I'm not exactly sure, but I think that we assume that the ratio of concentration from reactant to intermediate or intermediate to product is constant (everything is relative to each other), not that the intermediate has a constant concentration.
- Sun Feb 12, 2017 4:28 pm
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: Oxidation Numbers
- Replies: 4
- Views: 915
Oxidation Numbers
Hi! I'm not sure if oxidation numbers is on the midterm (I don't remember Lavelle talking about it but I remember at discussion my TA asking a question about it so maybe I missed something?), but I'd like to ask a question on it anyways. In a compound, is O always going to be -2, and H +1, or can it...
- Mon Jan 30, 2017 6:07 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: ATP and endothermic/exothermic
- Replies: 1
- Views: 1320
Re: ATP and endothermic/exothermic
Hi
I pretty sure that the phosphate that shoots of the ATP binds to something else, and the energy released to create that bond is greater than the energy needed to break the bond between ADP and P
I pretty sure that the phosphate that shoots of the ATP binds to something else, and the energy released to create that bond is greater than the energy needed to break the bond between ADP and P
- Sun Jan 22, 2017 10:28 pm
- Forum: Phase Changes & Related Calculations
- Topic: 8.39
- Replies: 3
- Views: 822
Re: 8.39
You need to first convert the ice at 0 C to water at 0 C, then heat up the water to 20 C
- Tue Jan 17, 2017 1:27 am
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Systems Chemistry
- Replies: 1
- Views: 314
Systems Chemistry
Hi! There was a question that my TA asked but I still don't really understand the answer. The internal energy of the system is 982kJ and the system absorbs 492kJ a) Was work done by or on the system? I thought that, because the system absorbed energy, that the work was done by the system, but the an...
- Sat Nov 26, 2016 8:57 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3683183
Re: Post All Chemistry Jokes Here
If H2O is water, what is H2O4?
Bathing, drinking, swimming, washing...
Bathing, drinking, swimming, washing...
- Sun Nov 20, 2016 8:54 pm
- Forum: Lewis Acids & Bases
- Topic: Lewis Acids & Bases vs Bronsted Acids & Bases
- Replies: 2
- Views: 814
Re: Lewis Acids & Bases vs Bronsted Acids & Bases
A tip I had when memorizing these
Their roles kinda flip (acid from acceptor to doner, and vice versa for base), which make sense, as protons and electrons are the opposite (strictly charge speaking) of each other
Their roles kinda flip (acid from acceptor to doner, and vice versa for base), which make sense, as protons and electrons are the opposite (strictly charge speaking) of each other
- Sun Nov 13, 2016 4:22 pm
- Forum: Naming
- Topic: Oxidation Numbers
- Replies: 1
- Views: 399
Re: Oxidation Numbers
Yes. It can be found by comparing the charge of the cation to the metal.
- Sun Nov 06, 2016 9:16 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Boron M.O. and Bond Order?
- Replies: 1
- Views: 855
Boron M.O. and Bond Order?
Can someone help explain to me how B2 has a bond order of 1 from the M.O. diagram but can form (as far as I could google and understand), single, double, and triple bonds with itself?
- Tue Oct 25, 2016 5:58 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Electron Configuration
- Replies: 1
- Views: 472
Re: Electron Configuration
Ag, like Cu above it, follow the rule that a half filled shell is more stable than a 9/10 filled shell, causing the s to be half fulled and the d fully filled, instead of the d 9/10 filled and the s fully filled. I believe that the elements are in the same groups as Cr and Cu follow this rule. As fo...
- Mon Oct 24, 2016 12:39 pm
- Forum: Student Social/Study Group
- Topic: Courtside Study Group
- Replies: 1
- Views: 631
- Sun Oct 09, 2016 8:04 pm
- Forum: Empirical & Molecular Formulas
- Topic: Question on #9 from Quiz 1 Preparation Fall 2015 [ENDORSED]
- Replies: 1
- Views: 646
Re: Question on #9 from Quiz 1 Preparation Fall 2015 [ENDORSED]
I think you may have rounded a bit too much
I, like you got C and O as my lowest numbers as 3.28, and H as 7.88. However, when you divide 7.88/3.28, you get 2.39 which, when approximated to 2.4, you can multiply by 5 to get 5:5:12 ratio of C:O:H ratio, which conveniently is the right molar mass
I, like you got C and O as my lowest numbers as 3.28, and H as 7.88. However, when you divide 7.88/3.28, you get 2.39 which, when approximated to 2.4, you can multiply by 5 to get 5:5:12 ratio of C:O:H ratio, which conveniently is the right molar mass
- Fri Sep 30, 2016 1:44 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3683183
Re: Chemistry Jokes
Don't ever think you don't matter
...because everything is matter
...because everything is matter