CHEMISTRY COMMUNITY

Layla Manoochehri

is there a section in the textbook that talks about acid rain? i can't find anything (i have the 6th edition)

Layla Manoochehri

"order these anions in order from least to most polarizable: At^-, Cl^-, O^2-, N^3-" "order these cations in order from least to most polarizing power: Be^2+, Sr^2+, Rb^+, Na^2+" I got these wrong on the test (question 6), can anyone tell me what the right order was for them? tha...

Layla Manoochehri

For C6H4, why are the two C atoms that are sp and not sp2 constrained?

Layla Manoochehri

in the textbook it said "as the s-character of a hybrid orbital increases, the bond angle increases", can someone explain this? what is s-character?

Layla Manoochehri

Can someone explain why every Bronsted base is a Lewis base, but not every Lewis base is a Bronsted base?

Layla Manoochehri

"Calculate the ionization energy of a rubidium atom, given that radiation of wavelength 58.4 nm produces electrons with a speed of 2450 km/s. Recall that 1 J = 1 kg.m^2.s^-2"

Can anyone show me how to solve this?

Layla Manoochehri

when an excitation in an atom occurs, does the electron lose or gain energy? i got this wrong on one of our tests so does anyone mind explaining it to me? thanks!

Layla Manoochehri

can anyone explain how decreasing the uncertainty in momentum affects the uncertainty in wavelength?

Layla Manoochehri

can someone explain conceptually why the presence of a lone pair will change the shape, for example from linear to bent?

Layla Manoochehri

are coordinate covalent bonds the bonds found when an element has a deficient octet? i feel like i remember reading that or hearing it in lecture but im not quite sure

Layla Manoochehri

how do we know the bond length? is it something we have to look up?

Layla Manoochehri

just to clarify, how important is the distance between the molecules for the dipole dipole interaction?

Layla Manoochehri

Does anyone know when the next test is following the midterm we just took this week? I'm assuming it would mostly cover molecular shape/structure but I'm just wondering. I wasn't able to find it in the syllabus

Layla Manoochehri

For the midterm do we need to know how to find the relative lattice energies of solids (like example 3.2 in the 6th edition of the textbook)? I don't remember learning about this in lecture / don't see it in my notes but I just want to make sure!

Layla Manoochehri

can someone explain the 3d and 4s orbital configuration conceptually? im not quite sure i understand it

Layla Manoochehri

i don't think so. maybe know the concept and generally what it is, but i'd say focus on main periodic trends like trends in atomic radius, ionic radius, ionization energy, and electron affinity for the midterm.

Layla Manoochehri

how are ionization energy and electron affinity related? what are the differences between them?

Layla Manoochehri

So should we completely skip the "Interactions between ions" section of the textbook? do we not need to know to the coulomb potential energy of the interaction of two ions?

Layla Manoochehri

Can someone explain what a diagonal relationship is / how it arises? I'm kinda confused. Thanks!

Layla Manoochehri

can someone explain why the ionization energy for oxygen is lower than the ionization energy for nitrogen or fluorine?

Layla Manoochehri

do we need to know these blocks for the test this week? i know he said we'd only need to know information covered until friday of week 3 but i can't really remember if we went over this quickly and i just don't remember, or if we don't need to know it for this test.

Layla Manoochehri

does this include knowing the appearances of the orbitals like the d-orbital?

Layla Manoochehri

im confused, is it h/4π or is it h(bar)/2? or are they the same thing?

Layla Manoochehri

In example 1.4 of the 6th edition of the textbook it has you calculate the energy of a single photon and then the energy per mole of photons, so i think its important that you remember things like avogadro's number from test 1 because they're fundamentals and will probably show up again on other tes...

Layla Manoochehri

so does that mean we don't need to know about the Stefan-Boltzmann law or Wien's law?

Layla Manoochehri

should we focus on knowing how to use the equation or just being able to identify the series based on what we're given?

Layla Manoochehri

so how do I know what order to put the elements in when naming it then?

Layla Manoochehri

c is a constant, for speed of light in a vacuum. in class Dr. Lavelle said it's 3.00 x 10^8 m/s.

Layla Manoochehri

Clarifying question, is g/mol the same as g.mol^-1 ?

CHEMISTRY COMMUNITY

Search found 29 matches

acid rain

polarizability/polarizing power test 3

C6H4

s character

Bronsted v Lewis

Midterm Q3B

excitation

Momentum Uncertainty

lone pair influence on shape

Re: Coordinate Covalent Bond Definition

Re: Bond Length

dipole distance

Test

Lattice energies of solids

3d and 4s

Re: 6th Edition 2.71

ionization energy & electron affinity

Interactions between ions

Diagonal Relationship

Re: Ionization Energy [ENDORSED]

Re: Period Table 'blocks'

Re: Test Two: Electron Configuration

Re: Equation

Re: Test 2

Re: Black Body

Re: Lyman vs Balmer

Re: Molecular Formula

Re: C=Delta x V

Re: What is the notation for molar mass?