CHEMISTRY COMMUNITY

Shundeen Martinez 1D

What is the difference between lewis acids and bases and bronsted acids and bases? And how can you determine both?

Shundeen Martinez 1D

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.

Shundeen Martinez 1D

What would be considered a weak acid/base? And how do you know it's weak?

Shundeen Martinez 1D

Can something just have a hybridization of s if it only is connected to one region of electron density?

Shundeen Martinez 1D

Do double and triple bonds change the hybridization of an atom?

Shundeen Martinez 1D

Why can there be multiple pi bonds but only one sigma bond?

Shundeen Martinez 1D

It is the only one out of the three that has an expanded octet.

Shundeen Martinez 1D

Each test covers everything on from what we learn after the test before begins.

Shundeen Martinez 1D

Do you mean atomic radius?

Shundeen Martinez 1D

We will probably have to since we did do that on class in Monday with Ethene.

Shundeen Martinez 1D

Hybridization depends on the shape of the molecule and is the shape of the molecule.

Shundeen Martinez 1D

Do lone pairs affect the shape and name of a structure?

Shundeen Martinez 1D

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.

Shundeen Martinez 1D

I vaguely remember molecular shapes from high school, what are the shapes again? And how can you find out the shape?

Shundeen Martinez 1D

What are bond angles and how can you predict them?

Shundeen Martinez 1D

How can you find a VSEPR formula?

Shundeen Martinez 1D

Why does Sulfur have a higher electron affinity than Oxygen if it is below Oxygen on the periodic table?

Shundeen Martinez 1D

How can you find the formal charges on each atom in a Lewis structure?

Shundeen Martinez 1D

Which elements can have more than 8 valence electrons when being bonded?

Shundeen Martinez 1D

When do you bond with double and triple lines? I vaguely remember them in high school but I don't understand them anymore.

Shundeen Martinez 1D

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

Shundeen Martinez 1D

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?

Shundeen Martinez 1D

I am pretty sure it is also dx dy dz but I am not sure about the second part of your question.

Shundeen Martinez 1D

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.

Shundeen Martinez 1D

When specifically is the last day we can post on Chemistry Community to get credit for the week?

Shundeen Martinez 1D

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.

Shundeen Martinez 1D

Yes, you use 3 sig figs in that situation.

Shundeen Martinez 1D

They are collecting them during discussions now so don't forget to bring your homework to discussion!

Shundeen Martinez 1D

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.

Shundeen Martinez 1D

What's the difference between a reactant and a reagent? Are they just used interchangeably?

Shundeen Martinez 1D

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?

CHEMISTRY COMMUNITY

Search found 31 matches

Lewis Acids and Bases and Bronsted?

Re: Naming Fe coordination compounds

Weak Acids/Bases?

S Hybridization?

Double and Triple Bonds

Sigma bonds

Re: Lewis structure for POCl3

Re: Test 3

Re: Molecular Size

Re: VSEPR

Re: Unhybridized orbitals

VSEPR

Re: Bond Angles

Different Shapes

Bond Angles

VSEPR Formula

Electron Affinity???

Lewis Structures- formal charge

Valence Electrons

Double and Triple Bonds???

Re: Ground State Electron Configurations

Lewis Structures

Re: Slight Confusion

Re: energy in shells closer to the nucleus

Chem Community Due Date

Re: Writing Chemical Equations

Re: significant figures

Re: Homework for Week 2

Re: Molecular weight vs molar mass

Limiting Reactant vs. Reagent??? [ENDORSED]

Empirical Formula Calculations