Search found 17 matches
- Sun Feb 12, 2017 11:59 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: Standard enthalpies of formation
- Replies: 3
- Views: 836
Re: Standard enthalpies of formation
Okay, wait... so the things that can change the change of heat of the reaction include using the reverse reaction, and multiplying to change the coefficient?
- Sun Feb 12, 2017 11:50 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 4008551
- Sun Jan 29, 2017 11:23 pm
- Forum: Student Social/Study Group
- Topic: Study Group
- Replies: 1
- Views: 452
Re: Study Group
I don't have the quiz until Friday, but I maybe can meet up tomorrow night to study. Do you know when you'll be free?
- Sun Jan 22, 2017 10:37 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 4008551
- Sun Jan 15, 2017 11:06 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 4008551
- Sat Dec 03, 2016 5:31 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Final Practice 2012
- Replies: 3
- Views: 818
Re: Final Practice 2012
For some reason I remember that an electron was taken from the 3d orbital before it was taken from 4s. Am I just imagining this, or are there acceptions?
- Sat Dec 03, 2016 5:08 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Finding the "Highest L value for the e-" [ENDORSED]
- Replies: 1
- Views: 735
Finding the "Highest L value for the e-" [ENDORSED]
So I was in a review session today and had to leave a little early so I couldn't ask a question. So the question gave us different elements such as Ca, K, and F, and then we were supposed to find the n value, and the Highest L value for the e-. So when you organize the orbitals pertaining the the L ...
- Sat Dec 03, 2016 4:57 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 4008551
- Fri Nov 04, 2016 11:25 am
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Electron Configuration for Fe 3+
- Replies: 5
- Views: 46578
Re: Electron Configuration for Fe 3+
How can you tell if the orbital has a lower energy level? Is it just something we have to memorize. I've heard Dr. Lavelle say this many times in lecture so is it just like something that's given?
- Fri Nov 04, 2016 11:24 am
- Forum: Trends in The Periodic Table
- Topic: Cation vs Anion Size [ENDORSED]
- Replies: 3
- Views: 3010
Re: Cation vs Anion Size [ENDORSED]
For different anions, how would we determine what one is bigger/smaller especially when they're so close to each other on the periodic table?
- Fri Nov 04, 2016 11:23 am
- Forum: Trends in The Periodic Table
- Topic: Px py and pz
- Replies: 4
- Views: 1805
Re: Px py and pz
I've seen this when writing out the hybridizations of certain bonds, is there any other instance where we would use them?
- Fri Nov 04, 2016 11:21 am
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: S, P, D, and F Orbitals [ENDORSED]
- Replies: 4
- Views: 1186
Re: S, P, D, and F Orbitals [ENDORSED]
I also have a question pertaining to electron configuration. Sometimes the 4s orbital is taken out before the 3d when writing the electron config for ions. Is this always true that the s orbital will always be taken out first?
- Fri Nov 04, 2016 11:15 am
- Forum: Properties of Light
- Topic: What to do when a Energy is given in kJ*mol-1?
- Replies: 6
- Views: 1313
Re: What to do when a Energy is given in kJ*mol-1?
Is there like a trick or something to memorizing the wavelengths of each light wave? No matter how much I try to remember them, they just seem to slip my mind.
- Sat Oct 29, 2016 8:51 pm
- Forum: Hybridization
- Topic: s character
- Replies: 3
- Views: 87639
Re: s character
Can someone go over with me how to determine hybridization? I can kind of grasp the concept, but can someone help me solidify the idea. Please and thanks!
- Sun Oct 16, 2016 9:04 pm
- Forum: Lewis Structures
- Topic: Electron Configuration CH3 Problem 11
- Replies: 1
- Views: 984
Electron Configuration CH3 Problem 11
Hi, I was doing the homework and it said find the M3+ ion that is predicted to have the following ground state electron configuration. The problem was for "[Ar] 3d5" and it said that would be Fe3+ and I'm wondering why it isn't Mn3+ because I thought that was [Ar]3d5.
- Fri Oct 07, 2016 11:54 pm
- Forum: Limiting Reactant Calculations
- Topic: Finding Molar Mass in a Limiting Reagent Problem [ENDORSED]
- Replies: 3
- Views: 5131
Re: Finding Molar Mass in a Limiting Reagent Problem [ENDORSED]
So I was a little confused in my discussion because my TA multiplied the moles of each of the reactants by the mole ratios of the reactant:product, but the way I learned in high school was to multiply the moles of each reactant by the mole ratios of reactant:reactant to find out what you have vs wha...
- Fri Sep 30, 2016 9:07 am
- Forum: Student Social/Study Group
- Topic: Rieber Vista Study Group!
- Replies: 8
- Views: 1767
Rieber Vista Study Group!
Hey! My name is Tyler Honrada and I live in Rieber Vista. If anyone in Rieber Vista or any part of Rieber would like to form a study group, let me know! My email is tyler.honrada@gmail.com. I know that I saw a group for Rieber Hall, but I wanted to open it up to all of Rieber Court. I like food, so ...