Search found 31 matches
- Fri Dec 07, 2018 1:43 pm
- Forum: Bronsted Acids & Bases
- Topic: Lewis Acids and Bases and Bronsted?
- Replies: 5
- Views: 593
Lewis Acids and Bases and Bronsted?
What is the difference between lewis acids and bases and bronsted acids and bases? And how can you determine both?
- Fri Dec 07, 2018 1:41 pm
- Forum: Naming
- Topic: Naming Fe coordination compounds
- Replies: 4
- Views: 463
Re: Naming Fe coordination compounds
There are some weird rules regarding naming, iron can be ferrous and water has to be aqua. I'm pretty sure Lavelle has a link to naming rules on his main class website if you need more help.
- Fri Dec 07, 2018 1:39 pm
- Forum: Lewis Acids & Bases
- Topic: Weak Acids/Bases?
- Replies: 5
- Views: 687
Weak Acids/Bases?
What would be considered a weak acid/base? And how do you know it's weak?
- Sun Dec 02, 2018 8:14 pm
- Forum: Hybridization
- Topic: S Hybridization?
- Replies: 5
- Views: 443
S Hybridization?
Can something just have a hybridization of s if it only is connected to one region of electron density?
- Sun Dec 02, 2018 8:09 pm
- Forum: Hybridization
- Topic: Double and Triple Bonds
- Replies: 17
- Views: 4185
Double and Triple Bonds
Do double and triple bonds change the hybridization of an atom?
- Sun Dec 02, 2018 8:03 pm
- Forum: Hybridization
- Topic: Sigma bonds
- Replies: 9
- Views: 825
Sigma bonds
Why can there be multiple pi bonds but only one sigma bond?
- Tue Nov 20, 2018 8:23 pm
- Forum: Lewis Structures
- Topic: Lewis structure for POCl3
- Replies: 7
- Views: 1292
Re: Lewis structure for POCl3
It is the only one out of the three that has an expanded octet.
- Tue Nov 20, 2018 8:21 pm
- Forum: Hybridization
- Topic: Test 3
- Replies: 8
- Views: 782
Re: Test 3
Each test covers everything on from what we learn after the test before begins.
- Tue Nov 20, 2018 8:20 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Molecular Size
- Replies: 3
- Views: 335
Re: Molecular Size
Do you mean atomic radius?
- Tue Nov 20, 2018 8:12 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: VSEPR
- Replies: 2
- Views: 327
Re: VSEPR
We will probably have to since we did do that on class in Monday with Ethene.
- Tue Nov 20, 2018 8:11 pm
- Forum: Hybridization
- Topic: Unhybridized orbitals
- Replies: 10
- Views: 1342
Re: Unhybridized orbitals
Hybridization depends on the shape of the molecule and is the shape of the molecule.
- Tue Nov 20, 2018 8:07 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: VSEPR
- Replies: 5
- Views: 519
VSEPR
Do lone pairs affect the shape and name of a structure?
- Tue Nov 20, 2018 8:03 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Angles
- Replies: 13
- Views: 2245
Re: Bond Angles
Also when can we know that bond angles are less than what they usually are? Like I remember in lecture Lavelle said a bond angle was 106.5 degrees.
- Fri Nov 09, 2018 11:42 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Different Shapes
- Replies: 4
- Views: 346
Different Shapes
I vaguely remember molecular shapes from high school, what are the shapes again? And how can you find out the shape?
- Fri Nov 09, 2018 11:40 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Angles
- Replies: 13
- Views: 2245
Bond Angles
What are bond angles and how can you predict them?
- Fri Nov 09, 2018 11:39 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: VSEPR Formula
- Replies: 2
- Views: 331
VSEPR Formula
How can you find a VSEPR formula?
- Tue Oct 30, 2018 11:19 pm
- Forum: Trends in The Periodic Table
- Topic: Electron Affinity???
- Replies: 3
- Views: 416
Electron Affinity???
Why does Sulfur have a higher electron affinity than Oxygen if it is below Oxygen on the periodic table?
- Tue Oct 30, 2018 10:29 pm
- Forum: Lewis Structures
- Topic: Lewis Structures- formal charge
- Replies: 4
- Views: 465
Lewis Structures- formal charge
How can you find the formal charges on each atom in a Lewis structure?
- Tue Oct 30, 2018 10:28 pm
- Forum: Lewis Structures
- Topic: Valence Electrons
- Replies: 7
- Views: 595
Valence Electrons
Which elements can have more than 8 valence electrons when being bonded?
- Fri Oct 26, 2018 2:11 pm
- Forum: Lewis Structures
- Topic: Double and Triple Bonds???
- Replies: 2
- Views: 232
Double and Triple Bonds???
When do you bond with double and triple lines? I vaguely remember them in high school but I don't understand them anymore.
- Fri Oct 26, 2018 2:07 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ground State Electron Configurations
- Replies: 7
- Views: 622
Re: Ground State Electron Configurations
To make sure that the electron configuration is not extremely long, you use noble gasses. The last noble gas before Copper is Argon, which counts for 18, and you then have to find the configuration for the remaining amount of electrons. (Cu) 29- (Ar)18=11 electrons
- Fri Oct 26, 2018 2:02 pm
- Forum: Lewis Structures
- Topic: Lewis Structures
- Replies: 8
- Views: 650
Lewis Structures
When Professor Lavelle was doing the Lewis structures in class today, the only thing I was confused on was how he knew how many dots to put around each element?
- Fri Oct 19, 2018 3:42 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: Slight Confusion
- Replies: 3
- Views: 371
Re: Slight Confusion
I am pretty sure it is also dx dy dz but I am not sure about the second part of your question.
- Fri Oct 19, 2018 3:36 pm
- Forum: Electron Configurations for Multi-Electron Atoms
- Topic: energy in shells closer to the nucleus
- Replies: 4
- Views: 575
Re: energy in shells closer to the nucleus
Since the electrons are closer to the nucleus, they are closer to a positive charge which then makes the energy level of the electron lower.
- Fri Oct 19, 2018 3:32 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Chem Community Due Date
- Replies: 6
- Views: 618
Chem Community Due Date
When specifically is the last day we can post on Chemistry Community to get credit for the week?
- Fri Oct 12, 2018 1:24 am
- Forum: Balancing Chemical Reactions
- Topic: Writing Chemical Equations
- Replies: 2
- Views: 683
Re: Writing Chemical Equations
Yea we definitely have not learned that yet. If I can recall correctly, I'm pretty sure Professor Lavelle said it was okay if we couldn't do that yet. I'm not sure if we need to or even will eventually learn that in this quarter.
- Fri Oct 12, 2018 1:13 am
- Forum: Significant Figures
- Topic: significant figures
- Replies: 5
- Views: 657
Re: significant figures
Yes, you use 3 sig figs in that situation.
- Fri Oct 12, 2018 1:11 am
- Forum: SI Units, Unit Conversions
- Topic: Homework for Week 2
- Replies: 16
- Views: 969
Re: Homework for Week 2
They are collecting them during discussions now so don't forget to bring your homework to discussion!
- Thu Oct 04, 2018 8:34 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Molecular weight vs molar mass
- Replies: 3
- Views: 181
Re: Molecular weight vs molar mass
The only difference are the units. The numbers remain the same. The units for molecular weight are in atomic mass units and the units for molar mass are in grams per mole.
- Thu Oct 04, 2018 8:31 pm
- Forum: Limiting Reactant Calculations
- Topic: Limiting Reactant vs. Reagent??? [ENDORSED]
- Replies: 6
- Views: 734
Limiting Reactant vs. Reagent??? [ENDORSED]
What's the difference between a reactant and a reagent? Are they just used interchangeably?
- Tue Oct 02, 2018 12:25 pm
- Forum: Empirical & Molecular Formulas
- Topic: Empirical Formula Calculations
- Replies: 2
- Views: 336
Empirical Formula Calculations
When calculating the empirical formula and calculating whole atoms by dividing by the smallest value, can I round if the number I get is not a whole number? For example if I got something like 4.93, could I round it to 5?