CHEMISTRY COMMUNITY

Aedra Li 3H

There must be two bonds that are different for there to be resonance

Aedra Li 3H

When determining the strength of an acid, which is more important to consider: bond length or electronegativity?

Aedra Li 3H

Shape takes into consideration the electron repulsion that a lone pair would cause.

Aedra Li 3H

Considering an atom's VSEPR model is also helpful when determining a hybridization scheme.

Aedra Li 3H

Why cannot there be more than 6 bonding sites?

Aedra Li 3H

-ate is required when there is a negative charge

Aedra Li 3H

Does it matter whether or not we use the old names over the new names for the ligands? How significant is the difference?

Aedra Li 3H

What is the difference between Lewis acids and bases and Bronsted acids and bases?

Aedra Li 3H

Why is Ag+ a Lewis acid?

Aedra Li 3H

I think we also need to know the hybridization of the central atom that's associated with each shape.

Aedra Li 3H

Do sigma and pi bonds influence a molecule's shape, if so how?

Aedra Li 3H

I believe the bond angles would be less than 109.5

Aedra Li 3H

Does a radical affect the shape of a molecule the same way a lone pair does?

Aedra Li 3H

AX3E2 would be t shaped

Aedra Li 3H

Does it matter whether we label a molecule as either bent or angular, as they are the same thing?

Aedra Li 3H

Problem 2E9 asks to determine the shape of an ICl3 molecule. When I drew the Lewis Structure, I had 3 bonding pairs and 2 lone pairs so I assumed the shape would be a trigonal bipyramidal. However, in the solution manual it says that it has a T shape. Why is this the case?

Aedra Li 3H

How do you determine the polarizing power of a cation?

Aedra Li 3H

Is there a more organized way to write the formal charge? It sometimes gets messy and confusing when I have all these numbers around my Lewis Structure.

Aedra Li 3H

Why do atoms biradicals and do they occur often?

Aedra Li 3H

What section are we supposed to do our homework in for this week? Are we still allowed to do problems in the chemical bond section?

Aedra Li 3H

What is the difference between pi bonds and sigma bonds?

Aedra Li 3H

Does anyone have any tips or tricks for memorizing the order of EM radiation?

Aedra Li 3H

When drawing Lewis Structures, why is it better to place the negative formal charge on the more electronegative atom?

Aedra Li 3H

Is there a certain amount of lone pairs or bonds that an expanded octet can have?

Aedra Li 3H

For this problem you have to take into account that an atom loses an electron from the s shell before the d shell, then just look what atom has the same configuration from there if that makes sense.

Aedra Li 3H

Are dipole moments going to be on the midterm?

Aedra Li 3H

Doesn't Al have 3 valence electrons? Why would it gain electrons?

Aedra Li 3H

How did we determine the S value to be 6 in the example we did in lecture?

Aedra Li 3H

Why is it better to add elections with parallel spins in different orbitals than to pair them within the same orbital?

Aedra Li 3H

Can somebody explain exactly what a lobe is ?

Aedra Li 3H

The question states that in 1.0 s, a 60 W bulb emits 11 J of energy in the form of infrared radiation with wavelength 1850 nm. It asks for the energy per photon of of light emitted and the amount of photons of infarred radiation generated in 1.0 s. To start do I use the E=h(c/wavelength) equation to...

Aedra Li 3H

Doing a lot of practice problems in the textbook and doing the post module assessments really helps me get comfortable with the concepts.

Aedra Li 3H

Can somebody explain in depth what a hamiltonian is?

Aedra Li 3H

I was also confused by this question, and the solution manual did not list any percentage differences.

Aedra Li 3H

What is the mass of an electron? Does it ever vary?

Aedra Li 3H

Jk what i did was on the right track. Since the work function is the same as the threshold, I converted 150.6 kJ/mol to 1.506x10^5 J/mol. However, since the units are J/mol, I need to divide by Avogadro's constant, (6.022x10^23 electrons/mol) which would cancel out the moles and leave me with just ...

Aedra Li 3H

In the E=hv equation what does the h represent?

Aedra Li 3H

In the balancing chemical equation post assessment you are asked to find the net number of moles of gas produced from the combustion of 4 moles of butane. I know how to balance the equation, but am unsure as to how to determine the number of moles of gas that are produced.

Aedra Li 3H

Once you have determined how much of each compound is required for an empirical formula, how do you know what order to write the compounds in when you are rewriting whole empirical formula?

Aedra Li 3H

When I received my text books in the mail, the solution manual and looseleaf textbook came wrapped together.

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