Search found 14 matches

by Isayan_Natalie_3L
Sat Dec 03, 2016 4:11 pm
Forum: *Titrations & Titration Calculations
Topic: Stoichiometric Point, Halfway Stoichiometric Point from graph
Replies: 1
Views: 1506

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.)
by Isayan_Natalie_3L
Sat Dec 03, 2016 4:02 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Elecrons
Replies: 2
Views: 283

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.
by Isayan_Natalie_3L
Sat Nov 26, 2016 9:50 am
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Placement of Electrons in Orbitals
Replies: 2
Views: 419

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.
by Isayan_Natalie_3L
Tue Nov 15, 2016 5:46 pm
Forum: Naming
Topic: Quizlet for the names of Common Ligands
Replies: 10
Views: 1128

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...
by Isayan_Natalie_3L
Wed Nov 09, 2016 3:57 pm
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Difference between Q and K? [ENDORSED]
Replies: 1
Views: 260

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 ...
by Isayan_Natalie_3L
Sun Nov 06, 2016 1:40 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7582
Views: 1015322

Re: Post All Chemistry Jokes Here

A head start for Valentine's Day!
by Isayan_Natalie_3L
Thu Oct 27, 2016 9:22 pm
Forum: Trends in The Periodic Table
Topic: Question 93, Chapter 2 [ENDORSED]
Replies: 2
Views: 356

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...
by Isayan_Natalie_3L
Fri Oct 21, 2016 9:38 am
Forum: Quantum Numbers and The H-Atom
Topic: Textbook 2.19 (a)
Replies: 1
Views: 255

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 ...
by Isayan_Natalie_3L
Thu Oct 13, 2016 11:44 am
Forum: Molarity, Solutions, Dilutions
Topic: Workbook Page 11 Number 5
Replies: 2
Views: 423

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...
by Isayan_Natalie_3L
Tue Oct 11, 2016 11:29 am
Forum: Trends in The Periodic Table
Topic: Periodic table configurations
Replies: 1
Views: 324

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...
by Isayan_Natalie_3L
Tue Oct 04, 2016 1:28 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Example 1.7 on Pg. 18 Question [ENDORSED]
Replies: 5
Views: 725

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.
by Isayan_Natalie_3L
Mon Oct 03, 2016 5:51 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Example 1.7 on Pg. 18 Question [ENDORSED]
Replies: 5
Views: 725

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...
by Isayan_Natalie_3L
Mon Sep 26, 2016 3:55 pm
Forum: Student Social/Study Group
Topic: Chemistry Jokes
Replies: 31
Views: 4378

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.

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