Search found 21 matches

by MichelleKaku1H
Thu Dec 07, 2017 1:19 pm
Forum: Lewis Acids & Bases
Topic: Bronsted vs. Lewis
Replies: 6
Views: 216

Bronsted vs. Lewis

How are you supposed to tell if it's a Bronsted or Lewis acid or base? Are you supposed to just be able to tell from the reaction or by looking at the equation? Or is it given? Or is there another way to tell?
by MichelleKaku1H
Thu Dec 07, 2017 12:58 pm
Forum: Bronsted Acids & Bases
Topic: Bronsted vs. Lewis
Replies: 4
Views: 196

Bronsted vs. Lewis

Just wanted to clarify, Bronsted acids and bases have to do with proton donation/acception while Lewis acids and bases have to do with electrons? And when determining if it is strong or weak, is it the same for both types?
by MichelleKaku1H
Sun Dec 03, 2017 5:04 pm
Forum: Applying Le Chatelier's Principle to Changes in Chemical & Physical Conditions
Topic: Problem 11.81
Replies: 3
Views: 209

Re: Problem 11.81

Since the equilibrium constant at 600.K (1.7 x 10^-3) is greater than the equilibrium constant at 700.K (7.8 x 10^-5), less ammonia will be formed with the higher temperature. Therefore raising the temperature will favor the formation of reactants. Hopefully this clarifies it!
by MichelleKaku1H
Sun Dec 03, 2017 4:45 pm
Forum: Dipole Moments
Topic: Dipole Moments and Polarity
Replies: 9
Views: 309

Dipole Moments and Polarity

Can someone please clarify how to find/determine the dipole of a molecule and how you can find polarity with that?
by MichelleKaku1H
Thu Nov 23, 2017 10:11 am
Forum: Naming
Topic: Naming the metal
Replies: 4
Views: 141

Re: Naming the metal

Not sure if this helps, but I believe -ate is used for anion transition metals only!
by MichelleKaku1H
Wed Nov 22, 2017 1:11 pm
Forum: Properties & Structures of Inorganic & Organic Acids
Topic: How would you know which reactants/products create certain compounds (ex J.7)?
Replies: 2
Views: 356

Re: How would you know which reactants/products create certain compounds (ex J.7)?

Can someone please explain where the H2O came from in the example above? Or is it just always a product in these types of reactions?
by MichelleKaku1H
Thu Nov 16, 2017 10:46 am
Forum: Hybridization
Topic: Order of s,p,d in Names of Hybrid Orbitals
Replies: 3
Views: 129

Re: Order of s,p,d in Names of Hybrid Orbitals

In my discussion today, we talked about this issue, and my TA said that it shouldn't matter what order you put it in, whether the d be in the front or end. The reason the order is so important in electron configuration is to help with the charged atoms. But for hybrid orbitals, it shouldn't matter!
by MichelleKaku1H
Thu Nov 16, 2017 10:43 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Bond Angle
Replies: 7
Views: 254

Re: Bond Angle

The bond angle depends on the repulsion which takes bonds and lone pairs into consideration. So, I guess you can memorize the angle depending on the shape, but there are many possibilities. For me, I base it on my drawing of the molecule.
by MichelleKaku1H
Thu Nov 09, 2017 7:07 am
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: delta v
Replies: 4
Views: 212

Re: delta v

Yes! Multiply the indeterminacy by two because this gives the range for the velocity.
by MichelleKaku1H
Thu Nov 09, 2017 7:02 am
Forum: Trends in The Periodic Table
Topic: Electron Affinity - P, Na, Ar
Replies: 4
Views: 215

Re: Electron Affinity - P, Na, Ar

Yes! Just remember that noble gases are an exception when it comes to electron affinity!
by MichelleKaku1H
Thu Nov 02, 2017 12:12 am
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Exceptions to the Configuration Rules
Replies: 3
Views: 159

Re: Exceptions to the Configuration Rules

Just to make sure, there are no other exceptions to the rules that we need to know right? It's just copper and chromium?
by MichelleKaku1H
Wed Nov 01, 2017 11:52 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Sample Problem (Example 1.7// Textbook)
Replies: 2
Views: 136

Re: Sample Problem (Example 1.7// Textbook)

Yes! Even though you weren't specifically given a velocity, you can find the delta v by multiplying the uncertainty in velocity by two to account for adding and subtracting 1.00x10^-3 m/s.
by MichelleKaku1H
Tue Oct 24, 2017 7:54 am
Forum: Ionic & Covalent Bonds
Topic: Ionization Energy [ENDORSED]
Replies: 5
Views: 218

Ionization Energy [ENDORSED]

To clarify, ionization energy is the energy needed to remove an electron from an atom? Is this a consistent number for each atom? Or does it depend on the situation? Or basically, is it known? Or does it need to be solved for?
by MichelleKaku1H
Tue Oct 24, 2017 7:17 am
Forum: Trends in The Periodic Table
Topic: 2.75
Replies: 2
Views: 119

Re: 2.75

This doesn't mean reactive to a certain element or anything, but it means that the s-block metals are more unstable than the p-block ones. And the answer from the solutions manual states "the ionization energies of the s-block metals are considerably lower, thus making it easier for them to los...
by MichelleKaku1H
Thu Oct 19, 2017 10:30 pm
Forum: *Shrodinger Equation
Topic: The "H" Term in the Schrodinger Equation
Replies: 2
Views: 198

Re: The "H" Term in the Schrodinger Equation

I believe it refers to the double derivative of sin or cos wave functions. Because when you take the derivative of sin or cos twice, you return back to sin or cos (despite the negatives). Hopefully that makes some sense!
by MichelleKaku1H
Thu Oct 19, 2017 10:24 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: 2.19 Part B
Replies: 5
Views: 224

Re: 2.19 Part B

Justin Chu 1C wrote:That is correct. For the d-orbital, you can have 5 different numbers for your magnetic quantum number, specifically -2, -1, 0, 1, 2.

Can someone please explain how you get the magnetic quantum numbers of -2, -1, 0, 1, 2?
by MichelleKaku1H
Sat Oct 14, 2017 12:08 am
Forum: Properties of Electrons
Topic: Constructive vs. Destructive Interference [ENDORSED]
Replies: 4
Views: 375

Constructive vs. Destructive Interference [ENDORSED]

Can someone please explain the difference between the two? And what exactly is diffraction? I'm sorry, I'm really confused.
by MichelleKaku1H
Fri Oct 13, 2017 11:59 pm
Forum: Photoelectric Effect
Topic: Photon vs. Energy [ENDORSED]
Replies: 6
Views: 254

Photon vs. Energy [ENDORSED]

Is "photon" and "energy" interchangeable? When question talks about a photon, does that mean the energy?
by MichelleKaku1H
Thu Oct 05, 2017 1:45 pm
Forum: Empirical & Molecular Formulas
Topic: Mass Percent Composition
Replies: 4
Views: 195

Mass Percent Composition

When finding empirical formulas, do you always have to find the mass percent composition? How do you know when you need to find it? For example, in problem F.13 I didn't need to find it.
by MichelleKaku1H
Wed Oct 04, 2017 10:46 pm
Forum: Balancing Chemical Reactions
Topic: H1 // Book Problem [ENDORSED]
Replies: 7
Views: 349

Re: H1 // Book Problem [ENDORSED]

Yes, you cannot just simply add an element to the chemical equation if it isn't produced. To balance an equation, you need to add stoichiometric coefficients, not add elements to the reaction.
by MichelleKaku1H
Wed Oct 04, 2017 10:21 pm
Forum: SI Units, Unit Conversions
Topic: Sig Figs
Replies: 12
Views: 572

Re: Sig Figs

I get confused with sig figs when there are zeros. For example, if the number is 0.020, is there 2 or 3 sig figs?

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