My current favorite chem joke:
My final grade!
Search found 12 matches
- Sun Mar 19, 2017 10:17 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3872746
- Sun Mar 05, 2017 11:41 pm
- Forum: *Alkanes
- Topic: Isopropyl vs Propyl [ENDORSED]
- Replies: 4
- Views: 24130
Isopropyl vs Propyl [ENDORSED]
What is the difference between isopropyl and propyl?????
- Sun Feb 26, 2017 11:20 pm
- Forum: *Nucleophiles
- Topic: Organic Chemistry
- Replies: 2
- Views: 624
Organic Chemistry
What is the difference between transition state molecules and intermediates?
- Fri Feb 10, 2017 9:31 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Questions about ΔStotal and ΔU
- Replies: 1
- Views: 360
Re: Questions about ΔStotal and ΔU
I'm not sure about about the second part of your question, but ΔStotal is 0 when the equation is reversible and ΔU is 0 when the equation is at constant temperature, or isothermal.
- Fri Feb 10, 2017 8:49 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: 14.29
- Replies: 2
- Views: 557
Re: 14.29
ions,molecules with charges, are almost always aqueous! hope this helps!
- Tue Feb 07, 2017 9:00 pm
- Forum: Balancing Redox Reactions
- Topic: Question 7 2013 Midterm
- Replies: 2
- Views: 619
Question 7 2013 Midterm
Hello can anyone explain why you use n=10 in the last equation solving for gibbs free energy in standard conditions?
- Tue Feb 07, 2017 9:00 pm
- Forum: Balancing Redox Reactions
- Topic: Question 7 2013 Midterm
- Replies: 1
- Views: 423
Question 7 2013 Midterm
Hello can anyone explain why you use n=10 in the last equation solving for gibbs free energy in standard conditions?
- Wed Jan 25, 2017 11:27 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Formulas to know
- Replies: 3
- Views: 1012
Re: Formulas to know
What formula is used to calculate enthalpy density?
- Wed Nov 30, 2016 8:54 pm
- Forum: *Titrations & Titration Calculations
- Topic: ICE
- Replies: 5
- Views: 1025
Re: ICE
You're in the clear to approximate without using x if it is 10^-5, 10^-6 and so on. If it is 10^-3 you leave x and use the quadratic equation. But if it is 10^-4 you can take out x and to be sure you would then check if you're in the 5% range.
- Sat Oct 22, 2016 7:29 pm
- Forum: Lewis Structures
- Topic: workbook Quiz 2 preparation #7
- Replies: 2
- Views: 602
workbook Quiz 2 preparation #7
Why does the central Xenon atom have the extra pair of electrons added to its lewis structure?
- Sat Oct 15, 2016 3:59 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Questions on the two exceptions, Chromium and Copper. [ENDORSED]
- Replies: 3
- Views: 862
Re: Questions on the two exceptions, Chromium and Copper. [ENDORSED]
Are Copper and Chromium the only exceptions following this rule in the d-block? If not, how do you know whether they are an exception?
- Sat Oct 15, 2016 3:34 pm
- Forum: Lewis Structures
- Topic: Drawing a Lewis Structure
- Replies: 1
- Views: 421
Re: Drawing a Lewis Structure
As long as the least electronegative atom is central in the structure and the correct number of valence electrons are accounted for, the order in which you arrange the dots doesn't matter.