CHEMISTRY COMMUNITY

anishathomas

We use this for naming coordinate compounds. This is correct as it is the new version, but both versions can be used.

anishathomas

The difference between chloro and chlorido is that one is the new accepted suffix. Both do mean technically the same thing, its just one is more recent than the other.

anishathomas

Yes. One amphoteric molecule could be H20 but that still can't act both as a base or acid. It depends whether the other molecule reacting with water is more basic or acidic.

anishathomas

Based on whether the molecule or atom gives off or wants to gain a H plus can help you determine whether it is more acidic or basic. Also if you think about the conjugate base or acid, and its relative strengths, that can help too.

anishathomas

I think that for our purpose we can only be working with one transitional metal because we are working on the ligands attached to one TM .

anishathomas

You should probably know the formula just to understand that higher concentration in the forward reaction(in products) will lead to a higher Ka, meaning a stronger acid, lower ph.

anishathomas

If there is resonance than this increases the stability of the molecule. Therefore, due to resonance and delocalization of the electrons, the more readily the molecule will give off H+ and be a stronger acid.

anishathomas

If the acidic structure has resonance that means that it is usually stronger because it is able to find the most stable form of that molecule due to delocalization and readily give off H+.

anishathomas

The dipole moments in AsF5 cancel out whereas there is a lone pair in AsF3 creating polarity. Higher polarity and more imf due to this would create a higher boiling point.

anishathomas

Yes the angles would just be 90 due it having the vsepr formula AX4E2 and the molecular arrangement with the electrons opposite from each other, and therefore somewhat cancelling the repulsion related by the other.

anishathomas

We need to know how they relate to coordinate atoms, how they are electron pair donors or acceptors, and examples of some common ones.

anishathomas

Dipole moments are basically when the atoms that are drawn have differences in electronegativity. If you want to see if a molecule is polar, look at the overall structure. Sometimes there could be polar bonds but the structure's dipole moments could cancel each other out, and therefore be nonpolar.

anishathomas

If the question asks what is the hybridization of the overall molecule or the specific atom, then you would be required to use hybridization.

anishathomas

No, as long as you have the basic structure down and don't add things that don't need to be there you should be fine.

anishathomas

Boron is one of the examples of elements that can have expanded octects. Also those that are 2p and lower can have expanded octects.

anishathomas

It would be the average of the lengths given for the resonance structures.

anishathomas

I think for most of them you just have to memorize it for the fastest way on an exam. However it will help to realize that when there are lone pairs, that will affect the bond angles. For exme, if there are four areas of electron densities, but one of them is occupied by lone pirs, and sy the shape ...

anishathomas

When you have Roman numerals it means you’re dealing with transitional metals. You are denoting the charge of that transitional metal.

anishathomas

You have to use e=hv as thst is the energy of the photon. Since you have the energy already you just have to solve for frequency as h is already given.

anishathomas

There are some instantances where formal charge does not equal zero. It would be preferable if the central atom has one of zero, but if it isn’t and you made sure that you have drawn the Lewis structure with the lowest energy,and you still have a formal charge of negative one, then it can happen

anishathomas

It would be nice if the formal charges equal zero but sometimes it’s not so it would be the lowest amount for the formal charge.

anishathomas

I would ask your ra they usually know where you can rent them out

anishathomas

You look for which one of the elements have lower ionization energies. Also you can usually rule out hydrogen as it tends to never be in the middle. Ionization energy increases across and period and decreases as you go down a group

anishathomas

With magnetic quantum number you can know more about the orbitals within the subshells.

anishathomas

I used h as the same value for both questions-and it worked. Just make sure you use h/4pi instead of h/2pi instead of the different value of h.

anishathomas

You can use the second equation for sure. The second one is easier to use because it can help find the frequency or use a frequency you already found to use in the formula.

anishathomas

When wavelength gets bigger, the frequency decreases. If you look at the equation v=f(lambda) and we know that there is constant speed(at least in the same medium) then we know that if one increases, the other has to decrease. Therefore, it is an indirect relationship.

anishathomas

Yeah photon's have zero mass and therefore you can't use that equation. Instead, you use the momentum to figure out the wavelength.

anishathomas

Unless specified always stick with meters. It's just easier in the long run especially when using a specific formula.

anishathomas

I think that there must be different equations because it shows on my notes that it works only for the H spectrum.

anishathomas

The way I calculate the limiting reactant is by first finding the amount of moles are in the reactants given. Once you find the moles, only convert one of them to the moles of the other reactant. For example, if you had a equation of 2h2+2o2----2h202 find the moles of h2 through o2 by multiplying th...

anishathomas

This test was just a review of the fundamentals of chemistry in high school. If you did the modules and understood some of the intermediate level questions of the textbooks you should be fine. There was no long step equations that you should worry about(I would still do them just to test where you a...

anishathomas

Hi it says required on the website but I think the actual homework that is due is the seven problems. The modules will probably help greatly for the coming tests though.

anishathomas

Hi yeah you just have to use the least amount of sig figs and I usually wait till the end to do so just because it’s less of a hassle doing it in between problems. However there are different rules between multiplying numbers and finding dog figs than if you were adding numbers which I would just re...

anishathomas

Yeah if it’s very close to a whole number you don’t have to worry about it. 4.03 is close enough to 4!

CHEMISTRY COMMUNITY

Search found 35 matches

Re: Anionic ligands

Re: naming differences

Re: Amphoteric clarification

Re: How to identify Acids/Bases

Re: Transition Metal

Re: Ka Formula

Re: Resonance in acids

Re: Resonance Structures

Re: 7th Edition 3F.15

Re: Square Planar

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Re: Polarity

Re: when to use hybridization

Re: Drawing Structures on Test

Re: Boron Trifluoride

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Re: Exam 2 Question 4A

Re: Formal Charge

Re: Formal CHarge

Re: Calculator for midterm

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Re: Magnetic Quantum Number

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Re: Frequency Condition

Re: Wavelength and frequency proportions [ENDORSED]

Re: wave property

Re: units

Re: En= -hR/n^2

Re: How to determine the limiting reactant???? [ENDORSED]

Re: Test 1

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Re: Determining the Number of Atoms for the Empirical Formula