Search found 14 matches
- Sat Dec 03, 2016 4:11 pm
- Forum: *Titrations & Titration Calculations
- Topic: Stoichiometric Point, Halfway Stoichiometric Point from graph
- Replies: 1
- Views: 2934
Re: Stoichiometric Point, Halfway Stoichiometric Point from graph
The stoichiometric point is where the slope on the graph is the "steepest." (It's also technically an inflection point.) The pKa point is the same as the half way point and happens at half the volume of the stoichiometric point (not necessarily half the pH.)
- Sat Dec 03, 2016 4:02 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: Elecrons
- Replies: 2
- Views: 566
Re: Elecrons
More of a conceptual physics question, but electrons don't collide. Placing electrons in orbitals is a way of classifying energy levels, not there positions in space.
- Sat Nov 26, 2016 9:53 am
- Forum: Naming
- Topic: Quizlet for the names of Common Ligands
- Replies: 10
- Views: 2173
- Sat Nov 26, 2016 9:50 am
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Placement of Electrons in Orbitals
- Replies: 2
- Views: 797
Re: Placement of Electrons in Orbitals
The electron removed/added would be from the p orbital of the oxygen atom because, as you said, it is more electronegative.
- Tue Nov 15, 2016 5:46 pm
- Forum: Naming
- Topic: Quizlet for the names of Common Ligands
- Replies: 10
- Views: 2173
Quizlet for the names of Common Ligands
For those of you who haven't memorized the names of ligands yet, I made a quizlet. https://quizlet.com/IsayanNatalie/folders/chemistry-14a Feel free to use the link above- so far I've only done the common ligands mentioned in the book, but I've been unable to incorporate subscripts and underlining i...
- Wed Nov 09, 2016 3:57 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Difference between Q and K? [ENDORSED]
- Replies: 1
- Views: 464
Re: Difference between Q and K? [ENDORSED]
The value of K never changes for an equilibrium reaction. You only need to calculate the value Q when you're given the concentrations of the products and reactants and asked if the reaction is in equilibrium (only when Q=K). K is either given, like in the first case, or you are asked to solve for K ...
- Sun Nov 06, 2016 1:40 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2758564
Re: Post All Chemistry Jokes Here
A head start for Valentine's Day!
- Thu Oct 27, 2016 9:22 pm
- Forum: Trends in The Periodic Table
- Topic: Question 93, Chapter 2 [ENDORSED]
- Replies: 2
- Views: 634
Re: Question 93, Chapter 2 [ENDORSED]
Your reasoning is right that Na+ should be smaller and looking at other molecules of NaCl, Na is shown to be the smaller ion in all the diagrams. Maybe the solutions manual is wrong? Na+ should be smaller since it loses its only electron in the 3s orbital. The ionix radius for Na+ is 116pm and the r...
- Fri Oct 21, 2016 9:38 am
- Forum: Quantum Numbers and The H-Atom
- Topic: Textbook 2.19 (a)
- Replies: 1
- Views: 495
Re: Textbook 2.19 (a)
The question is asking for how many different electron orbitals (l) can exist when the quantum number (n) is equal to 7. The relation between the value of n and l is that the maximum value of l is n-1. Since the lowest value of n is 1,that means the lowest possible value of l is 0 (corresponding to ...
- Thu Oct 13, 2016 11:44 am
- Forum: Molarity, Solutions, Dilutions
- Topic: Workbook Page 11 Number 5
- Replies: 2
- Views: 772
Re: Workbook Page 11 Number 5
That weird period in between water and copper(II) sulfate is not a typo, it means that it's a hydrate. The rest of the problem is pretty simple, you just use the M=moles of solute/liter M= \frac{n}{L} formula, plug in the values for molarity and volume, which are already given, and solve for n. Afte...
- Tue Oct 11, 2016 11:29 am
- Forum: Trends in The Periodic Table
- Topic: Periodic table configurations
- Replies: 1
- Views: 524
Re: Periodic table configurations
The 4s orbital empty is actually lower in energy than than the 3d orbital empty, so starting from the d block elements (with a few exceptions) the 4s orbital fills before the 3d orbital; it just has to do with the electron wanting to fill an energy level "closer" to the nucleus of the atom...
- Tue Oct 04, 2016 1:28 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Example 1.7 on Pg. 18 Question [ENDORSED]
- Replies: 5
- Views: 1170
Re: Example 1.7 on Pg. 18 Question [ENDORSED]
In that case, delta v would be 6 x 10^2 Km inverse seconds because the velocity can either be found at x+ 3 x 10^2 km inverse seconds or it can be found at the opposite end of x - 3 x 10^2 km inverse seconds because it represents the potential difference between the extremes.
- Mon Oct 03, 2016 5:51 pm
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Example 1.7 on Pg. 18 Question [ENDORSED]
- Replies: 5
- Views: 1170
Re: Example 1.7 on Pg. 18 Question [ENDORSED]
In this case delta v is 2x10^-3 m s^-1 because it is a measure of the fluctuation of the velocity or the range of the velocity. If the given velocity is x m x s^-1 +/-1 it means that the velocity can range from x-1 m/s to x+1 m/s, making the range where all possible velocities can lie 2. Hope this h...
- Mon Sep 26, 2016 3:55 pm
- Forum: Student Social/Study Group
- Topic: Chemistry Jokes
- Replies: 31
- Views: 8620
Re: Chemistry Jokes
Two puns for y'all!
Today we are covering CH2O, or as i like to call it: Seawater
Have you spoken to C6H6 lately? He hasn't benzene around here for ages.
Today we are covering CH2O, or as i like to call it: Seawater
Have you spoken to C6H6 lately? He hasn't benzene around here for ages.