CHEMISTRY COMMUNITY

Rebecca Park

if it has a smaller pkb, then it has a stronger base but I think lavelle said that we learn that in 14b so we don't really need to know it for the test.

Rebecca Park

There is a table in the textbook that is nicely organized, but for binary, the more polar, the stronger the acid and the more weaker the H-A bond, the stronger the acid. For Oxoacids, the greater the number of Oxygen atoms attached to the central atom gives a stronger acid. If it has the same number...

Rebecca Park

we don't need to Ka and Kb

Rebecca Park

in alphabetical order!

Rebecca Park

it's in alphabetical order and then the ligand is before the transitional metal atom and you have to use prefixes to indicate the number of ligands.

Rebecca Park

polarizing power is the way that cations pull electrons from anions
polarizability is the ability to pull the electrons towards the anions

Rebecca Park

Ionic vs. covalent bonds, the strengths, and then chapter 6. I would just look at the textbook to see what will be on the test.

Rebecca Park

I think I remember him saying that we won't have to draw it, but I'm not completely sure.

Rebecca Park

You will either get the electronegativity and if the difference is greater than 0.4, then it will be polar.
If you aren't given the electronegativities, then you have to find it by looking at the shape of the lewis structure

Rebecca Park

It's after Thanksgiving break during week 9

Rebecca Park

You have to know the lewis structure to do other problems, so I think that it would be incorporated into the test.

Rebecca Park

My TA actually recommends us to go to other discussions if we don't understand something, so I'm sure it would be okay if you would like to join a different discussion.

Rebecca Park

I’m pretty sure there was an exception to Boron for the octet rule.

Rebecca Park

Every element after period 2 can follow the octet rule.

Rebecca Park

I usually round at the very end so I save the numbers in the calculator before rounding the final answer

Rebecca Park

Normally m, but in the solutions manual, they give both m and nm so I think both will be good

Rebecca Park

Ya I heard 5%, but I think also if it's not a number that can't really be multiplied to get a whole number, then it should be close enough to round up or down

Rebecca Park

The radius of the atom represents 1/2 of the uncertainty of the position of the electron, the diameter equaling the entire uncertainty. the size of the atom represents the uncertainty in position. You can use this uncertainty, as well as the mass of an electron and the constant h/4pi to calculate de...

Rebecca Park

Most of them follow the rules, but I know that Boron is an exception to it even though it only has 6 valence electrons.

Rebecca Park

Mostly because it has the most open spaces to add

Rebecca Park

because Boron itself is already stable. It doesn't really make sense because there are rules, but there are a few violations that go against the octet rule.

Rebecca Park

Ya! it doesn't matter in what order you place it

Rebecca Park

I've always changed it

Rebecca Park

I think we have another test after midterms over #3, so they should be equal

Rebecca Park

Find the energy from the lamp by multiplying 32*2=64. Then you can calculate the energy because wavelength is given by using E=hc/wavelength. Divide 64 by what you get to get the number of photons.

Rebecca Park

Since the emission is ultraviolet, the transition is in the Lyman Series, n2=1. Convert the 102.6 nm into energy and then plug it into the rydberg formula to solve for n1.

Rebecca Park

Will we be getting periodic tables during the test, or do we have to bring our own?

Rebecca Park

Idk if I completely get your question, but I think you have to find the limiting reactant between CO2 and H20, then whichever one is the limiting reactant (let's say CO2), you would have to multiply the limiting reactant to the ratio of the moles. So mole of O2 (6) would be on the numerator and mole...

Rebecca Park

I think so

Rebecca Park

Molarity=moles of solute (n)/volume of solution (v) is essentially the same thing as Mi*Vi=Mf*Vf. If you multiply the volume of solution over to Molarity, you get M*V=n and n initial= n final, which gives you m initial* v initial= mfinal* vfinal. You just see what information is given to you and the...

CHEMISTRY COMMUNITY

Search found 30 matches

Re: 6th Edition Ch12 #49

Re: strong vs weak acids

Re: Ka and Kb on Final

Re: order of ligands when going from name to formula

Re: Naming

Re: Polarizability vs Polarizing power

Re: Test 3

Re: Naming the Shape

Re: Polar vs Non Polar

Re: Test

Re: Test 3

Re: Thanksgiving Week

Re: What are the octet exceptions?

Re: Octet rule question

Re: When to round the answers to significant figures

Re: Standard Units

Re: How much can you round down for empirical formulas?

Re: Post-Module Q#18

Re: the Octet rule

Re: Lewis Dot Structures: Ionization Energy

Re: Boron as the Lewis Structure Exception

Re: Dot's in the Lewis Structure

Re: Units

Re: Midterm

Re: Quantum Theory 1.27

Re: Homework Problem 1A.15

Periodic Table

Re: Mole Ratios Within the Conversion

Re: Homework Question

Re: Problem G5