Search found 16 matches
- Sun Mar 05, 2017 6:44 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2955386
- Sun Feb 26, 2017 6:15 pm
- Forum: *Electrophiles
- Topic: AlCl3 as an electrophile
- Replies: 3
- Views: 970
Re: AlCl3 as an electrophile
It is an electrophile because the Al wants those 2 missing electrons in order to have its stable, full octet.
- Sun Feb 12, 2017 9:23 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2955386
- Sun Feb 05, 2017 2:03 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2955386
- Sun Jan 29, 2017 9:43 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2955386
- Sun Jan 22, 2017 4:58 pm
- Forum: Phase Changes & Related Calculations
- Topic: Derivations
- Replies: 21
- Views: 3357
Re: Derivations
I think you will be fine regarding the derivations, you will not have to know them as most of the equations needed will be given.
- Mon Jan 16, 2017 3:22 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Units of Reaction Enthalpies
- Replies: 11
- Views: 2071
Re: Units of Reaction Enthalpies
It can be either kJ/mol or kJ, just keep in mind the coeffecients of the products and what the question wants you to give as a final answer.
- Sat Dec 03, 2016 12:07 pm
- Forum: General Science Questions
- Topic: ICE Box [ENDORSED]
- Replies: 2
- Views: 852
Re: ICE Box [ENDORSED]
You will most likely be using them in weak acid and base problems to find their equilibrium concentrations; usually some indicators that you will have to use an ICE table is that they are asking for the concentrations and they have provided you with a "k" value (kb or ka).
- Thu Dec 01, 2016 5:42 pm
- Forum: *Titrations & Titration Calculations
- Topic: Hwk 13.29
- Replies: 5
- Views: 3366
Re: Hwk 13.29
Your final gram calculation for the NaOH is 1 decimal place off, but your final percentage is still correct...weird, must of just had a typo or something. *thumbs up*
- Mon Nov 21, 2016 5:14 pm
- Forum: Conjugate Acids & Bases
- Topic: Conjugate Acids & Conjugate Bases? [ENDORSED]
- Replies: 2
- Views: 1639
Re: Conjugate Acids & Conjugate Bases? [ENDORSED]
Examples: Weak acid and its conjugate base: CH3COOH + H2O<--> (CH3COO-) + (H30+); in this example, acetic acid (CH3COOH) loses a proton (H+) and becomes its conjugate base: an acetate ion. Weak Base and its conjugate acid: NH3 + H2O<--> (NH4+) + (OH-); in this example, ammonia (NH3) gains a proton (...
- Mon Nov 21, 2016 5:03 pm
- Forum: Conjugate Acids & Bases
- Topic: pH and pOH
- Replies: 4
- Views: 1296
Re: pH and pOH
I believe p means something along the lines of "power of (hydrogen)" or I have also heard it used as "potential of (hydrogen)."
- Thu Nov 03, 2016 6:21 pm
- Forum: Sigma & Pi Bonds
- Topic: Sigma and Pi Bonds
- Replies: 3
- Views: 920
Re: Sigma and Pi Bonds
Think of it like this: generally, single bonds are sigma bonds and each additional bond (i.e. within double and triple bonds) is a pi bond (double bonds have 1 sigma bond and 1 pi bond, triple bonds have 1 sigma bond and 2 pi bonds).
- Sun Oct 16, 2016 7:29 pm
- Forum: Lewis Structures
- Topic: Lewis Structures
- Replies: 6
- Views: 1055
Re: Lewis Structures
I don't know the exact length of a triple bond, but it's not that important to know the exact length of single, double, and triple bonds as these lengths vary between molecules. What is important is that bond length decreases as it goes from single>double>triple.
- Sun Oct 16, 2016 7:16 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2955386
Re: Post All Chemistry Jokes Here
I asked a couple of my friends if they wanted to hear a good sodium joke. They said Na.
- Sun Oct 16, 2016 7:14 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2955386
Re: Post All Chemistry Jokes Here
I got all these good chemistry jokes, I'm scared they won't get a good reaction :'(
- Wed Sep 28, 2016 11:03 pm
- Forum: Student Social/Study Group
- Topic: Chemistry Joke
- Replies: 13
- Views: 2894
Re: Chemistry Joke
sodium sodium sodium sodium sodium sodium sodium sodium Batman!....