Equations we need for midterm

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Sofia Q
Posts: 49
Joined: Sat Aug 17, 2019 12:15 am

Equations we need for midterm

Postby Sofia Q » Sat Nov 02, 2019 4:50 pm

Hi guys, as I do homework problems in preparation for the midterm I can't help to notice that some of them require equations that we did not practice with, or in some cases, not mention at all... Will we be expected to use them still? Or should we mainly focus on the application of equations that Dr. Lavelle explicitly went over during lecture?

For reference, I was starting the practice problems of the 1D section of Quantum World, specifically 1D.3.

Sunia Akaveka 4I
Posts: 67
Joined: Sat Sep 14, 2019 12:17 am
Been upvoted: 1 time

Re: Equations we need for midterm

Postby Sunia Akaveka 4I » Sat Nov 02, 2019 9:56 pm

I believe 1D.3 is not a part of our recommended homework problems. Thus, we will not be expected to reproduce problems outside of the recommended homework problems and what Dr. Lavelle covers in lecture. I hope this helps.

305421980
Posts: 101
Joined: Sat Sep 07, 2019 12:16 am

Re: Equations we need for midterm

Postby 305421980 » Sun Nov 03, 2019 10:56 pm

Additionally, all of the equations will be provided on the constants and equations paper provided on test day. There is a copy on the website.

Julia Mazzucato 4D
Posts: 64
Joined: Fri Aug 30, 2019 12:17 am

Re: Equations we need for midterm

Postby Julia Mazzucato 4D » Wed Nov 06, 2019 10:55 am

Equations we need for the midterm:

Unit 1 (HS Review)
Dilutions: (Mi)Vi) = (MfVf)
Percent yield: Actual/theoretical X 100
M = moles/liters

Unit 2 - Quantum
Photoelectric effect:
E=hv
Ephoton - work function = KEelectron (energy of the photon minus threshold energy = kinetic energy of the ejected electron)
Atomic Spectra:
E=-hR/n2
v=-R[(1/n12)-(1/n22)]
De Broglie Equation: wavelength = h/p
Heisenberg Uncertainty (delta p)(delta x) >= h/4pi

that's pretty much all the formulas. the rest is conceptual, just knowing how to draw LDS, do quantum numbers, electron configurations, periodic table trends, formal charge, stoichiometry, etc.)

Elizabeth Harty 1A
Posts: 125
Joined: Sat Jul 20, 2019 12:16 am

Re: Equations we need for midterm

Postby Elizabeth Harty 1A » Wed Nov 06, 2019 12:27 pm

is momentum mass times velocity?

sarahsalama2E
Posts: 164
Joined: Fri Aug 30, 2019 12:16 am

Re: Equations we need for midterm

Postby sarahsalama2E » Wed Nov 06, 2019 4:47 pm

Yes it is

Jorge Ramirez_4H
Posts: 54
Joined: Wed Nov 21, 2018 12:19 am

Re: Equations we need for midterm

Postby Jorge Ramirez_4H » Thu Nov 07, 2019 2:34 pm

How do we covert kj into J?

105289321
Posts: 49
Joined: Sat Sep 07, 2019 12:15 am

Re: Equations we need for midterm

Postby 105289321 » Sat Dec 07, 2019 9:26 pm

Divide the value in kj.mol by Planck's constant and then multiply by 1000 to convert from kj to j


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