CHEMISTRY COMMUNITY

Blake Salfer 1B

If there are multiple ligands you should put them in alphabetical order when naming the compound.

Blake Salfer 1B

Amphoteric means a substance can either act as an acid or a base. Amphiprotic means a substance can either donate or accept hydrogen ions.

Blake Salfer 1B

A conjugate acid is a species formed by the reception of a proton (H+) by a base, so basically it is a base with a hydrogen ion added to it. On the other hand, a conjugate base is what is left over after an acid has donated a proton during a chemical reaction.

Blake Salfer 1B

I assume we will have to calculate or memorize the charges of ligands on the test but, I haven't heard Dr. Lavelle say anything in regards to that yet

Blake Salfer 1B

I believe they are the same because the 2 in front just means that there are two sp2 hybridized orbitals

Blake Salfer 1B

I usually look at how many other atoms are being attached to the central atom and if it is say 3 other atoms the hybridization is just one less; sp2. For 5 and 6atoms attached to the central atom you just have to remember you are using d orbitals so it will always have an sp3 and then however many d...

Blake Salfer 1B

When looking at a molecule, is the only way to tell that it has dipole-dipole forces by determining if it is a polar molecule?

Blake Salfer 1B

I don't think Dr. Lavelle has stated what the final exam format will be yet and I haven't seen anything on the website either

Blake Salfer 1B

By drawing the lewis structures you should be able to tell the shape of the molecule and the bond angles correlate with the shape. For example trigonal planar has bond angles of 120 degrees and tetrahedral has bond angles of 109.5 degrees

Blake Salfer 1B

Can someone please explain what electrostatic potential means and how it relates to shape and such

Blake Salfer 1B

Orbital hybridization is the concept of mixing atomic orbitals into new hybrid orbitals (with different energies and shaped than the component atomic orbitals) suitable for the pairing of electrons to form chemical bonds. To calculate hybridization you add the number of bonded atoms and the lone pai...

Blake Salfer 1B

Cis stands for same side dipoles and trans stands for different side dipoles. Because Cis-dichloroethane has dipoles on the same side the molecule is polar. The trans-dicholoroethane is non-polar because the dipoles cancel out on different sides.

Blake Salfer 1B

It is the best form because the bonding pairs and lone pairs are as far away as possible

Blake Salfer 1B

as atomic radius increases electronegativity decreases because there is less attraction between the nucleus and shared electrons as atomic radius increases

Blake Salfer 1B

I think it is the middle or average of the bond lengths so it would be 105

Blake Salfer 1B

The 6s orbital is lower in energy relative to the 5d orbital than the 5s is relative to 4d or the 4s to 3d. Thus, the energy gained by not shoving two electrons into the 6s orbital, plus that from a half-filled 5d subshell, is not enough to compensate for promoting an electron from 6s to 5d.

Blake Salfer 1B

The 4s2 orbital is filled first, but when ions are formed the s orbital electrons are the first to go because they are at a higher energy state.

Blake Salfer 1B

This is the correct way to write it because the 4s orbital has higher energy than the 3d orbital it should be written after.

Blake Salfer 1B

An atom is in an excited state if the electron configuration is incorrect. Like for A if there were two up arrows in two separate boxes in the 2p orbitals it would be in its ground state. For C it is excited because there is a electron in 2p instead of a second electron in the 2s. The only element i...

Blake Salfer 1B

all you have to do is plug in the velocity found in the problem above into the equation Ek=1/2mv^2 and you will get the uncertainty in KE

Blake Salfer 1B

Dr. Lavelle stated that any wavelength smaller than about 1.0x10^-18 wouldn't be detectable. Basically anything besides subatomic particles have wavelengths that are too small to detect.

Blake Salfer 1B

Does anybody know if we will have to write out ground states of electrons even though we never covered this in lecture?

Blake Salfer 1B

Does somebody know what the correct answer to number 12 on the atomic spectra post-module is? All of the answers seem very similar and this is why I am a bit confused

Blake Salfer 1B

If n=4 l=3 and ml=-3,-2,-1,0,1,2,3 where is the electron located? would the correct answer be 4f?

Blake Salfer 1B

How to you use the Rydberg Formula to calculate wavelength of radiation generated by the transition from n=4 to n=2?

Blake Salfer 1B

Could someone explain what constructive and destructive interference have to do with diffraction patterns and electrons having wave like properties. I am confused by what the importance is of the two types of interference

Blake Salfer 1B

The answer in the back of the book states that A=Cl, B=Na, C=Cl- and D=Na+. You are right about chlorine having the smaller atomic radius

Blake Salfer 1B

I usually just use 1.008 for the molar mass of hydrogen but it all depends on how precise you want your answer to be. Your answer is close enough to see that you did the problem correctly, so I think it is okay.

Blake Salfer 1B

Yes I believe it is just asking for the number of molecules. Formula units is just a label similar to atoms or molecules

Blake Salfer 1B

If you have the equation 2A + 1B = 3C and 1 mole of A is mixed with 1 mole of B, which is the limiting reactant? Please explain as well

CHEMISTRY COMMUNITY

Search found 30 matches

Re: Name to Formula

Re: Amphoteric vs Amphiprotic

Re: Conjugate Acid/Base

Re: Charge on ligands

Re: Hybridization of bonds abbreviation

Re: hybridization

Dipole-Dipole forces

Re: Final Exam

Re: 6th edition 4.13

Electrostatic potential

Re: Hybridization

Re: cis and trans dichloroethene

Re: trigonal pyramidal

Re: Radius

Re: Bond Length

Re: 2.43 Tungsten

Re: Electron Configuration

Re: How to write P and D Orbitals

Re: How do I identify excited state through the electronic configuration

Re: Heisenberg Indeterminacy Post Assessment #20

Re: wavelike properties

Test question

Atomic Spectra

Quantum numbers

Rydberg formula

Wave Properties of Electrons

Re: 6th Edition Ch.2 Number 93

Re: Hydrogen Molar Mass HW E9

Re: E.25 part a

limiting reactant problem