Search found 20 matches

by isauramora3K
Fri Dec 08, 2017 1:14 am
Forum: Lewis Acids & Bases
Topic: What tables should we know from the book?
Replies: 4
Views: 281

Re: What tables should we know from the book?

I think you should memorize important strong acids and strong bases that are listed in the book.
by isauramora3K
Fri Dec 08, 2017 1:12 am
Forum: Conjugate Acids & Bases
Topic: Conjugate of CH3OOH [ENDORSED]
Replies: 2
Views: 362

Conjugate of CH3OOH [ENDORSED]

When you are asked for the conjugate base of lets say CH3OOH why is the Hydrogen at the end removed first and not the one of the Hydrogens at the beginning?
by isauramora3K
Sat Dec 02, 2017 1:47 pm
Forum: Non-Equilibrium Conditions & The Reaction Quotient
Topic: Chem. Equilibrium Part 2 Post-Module Assess. #26 [ENDORSED]
Replies: 2
Views: 292

Re: Chem. Equilibrium Part 2 Post-Module Assess. #26 [ENDORSED]

The correct answer is 0.175 or 0.18 as stated above, so the answer is A not B as stated above by mistake
by isauramora3K
Sat Dec 02, 2017 1:30 pm
Forum: Naming
Topic: Oxidation State [ENDORSED]
Replies: 2
Views: 179

Re: Oxidation State [ENDORSED]

How I find the oxidation state of a coordination compound and set up an equation. First I acknowledge what charges the ligands each have and multiply them with how many type that type of ligand there is. I then add these two numbers up. After I assign the metal the variable (x) and add it to the lig...
by isauramora3K
Mon Nov 27, 2017 11:02 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: problem11.23
Replies: 2
Views: 144

Re: problem11.23

As stated above 500K is the temperature in Kelvin and it affects the problem in some cases because the equilibrium constant will be different at a different temperature.
by isauramora3K
Mon Nov 27, 2017 10:57 am
Forum: Ideal Gases
Topic: Problem 11.37 [ENDORSED]
Replies: 3
Views: 238

Re: Problem 11.37 [ENDORSED]

The information for this question is on pages 439-440. Basically for (a) it is the reverse reaction so it is just the inverse of the forward reaction. For (b) and (c) you raise the equilibrium constant (K=41) to the number by which the reaction was multiplied. So in example since in part (b) it is m...
by isauramora3K
Sat Nov 18, 2017 10:42 am
Forum: Hybridization
Topic: Hybrid Orbitals 4.31
Replies: 2
Views: 174

Re: Hybrid Orbitals 4.31

Lone pairs count as a region of electron density
2 regions of electron density = sp
3 regions = sp^2
4 regions = sp^3
5 regions = sp^3d
6 regions = sp^3d^2
by isauramora3K
Sat Nov 18, 2017 10:37 am
Forum: Determining Molecular Shape (VSEPR)
Topic: 4.25 lewis structure
Replies: 4
Views: 204

Re: 4.25 lewis structure

^ 4.25A would be polar because although the 2D illustration looks like the charges would cancel out if you view the 3D model of a Tetrahedral shape they do not.
by isauramora3K
Sat Nov 11, 2017 2:33 pm
Forum: Ionic & Covalent Bonds
Topic: Valence of an Atom [ENDORSED]
Replies: 3
Views: 209

Re: Valence of an Atom [ENDORSED]

I think what Dr. Lavelle was trying to explain is that in the beginning you add up the number of valence electrons your structure should have so that at the end you are able to double check that you have the correct amount.
by isauramora3K
Sat Nov 11, 2017 2:22 pm
Forum: Electronegativity
Topic: Electronegativity [ENDORSED]
Replies: 5
Views: 334

Re: Electronegativity [ENDORSED]

Fluorine is the most electronegative element because it has 5 electrons in its 2P shell. Since is so close to noble gas configuration the electrons are held very close to the nucleus and its desire to gain an electron is very high.
by isauramora3K
Sat Nov 04, 2017 4:40 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Order of Orbitals
Replies: 10
Views: 516

Re: Order of Orbitals

Technically it isn't incorrect to write it in that order, but Dr. Lavelle prefers you put them in order of increasing energy. It makes writing electron configuration for ions easier because the last orbital is the one that loses or gains electrons first and it goes backwards from there.
by isauramora3K
Sat Nov 04, 2017 4:34 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: d and s blocks
Replies: 16
Views: 723

Re: d and s blocks

The energy levels go as following (lowest to highest): f, d, s, and p. F is (n-2) and d is (n-1).
by isauramora3K
Sat Oct 28, 2017 12:29 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Difference Between Orbitals and Subshells [ENDORSED]
Replies: 7
Views: 665

Difference Between Orbitals and Subshells [ENDORSED]

Can someone please clarify which variables are the orbitals and which are the subshells, I am a bit confused.
by isauramora3K
Sat Oct 28, 2017 12:16 pm
Forum: Hybridization
Topic: Principle Quantum Number in D-Block [ENDORSED]
Replies: 4
Views: 288

Principle Quantum Number in D-Block [ENDORSED]

Why does the principle quantum number drop down by one when you reach the D-block?
by isauramora3K
Sun Oct 22, 2017 1:28 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Quantum Numbers [ENDORSED]
Replies: 1
Views: 126

Quantum Numbers [ENDORSED]

Where would I be able to find the quantum number based on the information given on blank periodic table?
by isauramora3K
Sun Oct 22, 2017 1:05 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: ORBITALS, SHELLS ETC. [ENDORSED]
Replies: 6
Views: 351

Re: ORBITALS, SHELLS ETC. [ENDORSED]

I'm pretty sure he gives us a periodic table, but you should try and master electron configuration and the 2 rules we learned in class.
by isauramora3K
Sun Oct 15, 2017 5:30 pm
Forum: Properties of Light
Topic: Converting Units [ENDORSED]
Replies: 11
Views: 544

Re: Converting Units [ENDORSED]

If it was converting units such as m^3 to cm^3 then you should convert all units at the beginning but if its converting units where you simply move a decimal such as nm to pm then do it at the end.
by isauramora3K
Sun Oct 15, 2017 5:16 pm
Forum: Properties of Light
Topic: Question about speed of light rounding
Replies: 4
Views: 249

Question about speed of light rounding

In problem 1.15 why did they round the speed of light (2.998 x 10^8) but in problem 1.17 they didn't (2.99792 x 10^8)?
by isauramora3K
Fri Oct 06, 2017 10:20 pm
Forum: Balancing Chemical Reactions
Topic: Net Moles Produced [ENDORSED]
Replies: 5
Views: 500

Net Moles Produced [ENDORSED]

What does it mean when it asks for net number of moles produced?
by isauramora3K
Fri Oct 06, 2017 10:05 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Rounding Rule for 5
Replies: 5
Views: 438

Re: Rounding Rule for 5

I would say that the rounding error that would occur would be very minimal but if you want to avoid significant errors over many calculations round significant figures at your final answer only.

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