Search found 24 matches

by melodyso1K
Thu Jun 14, 2018 1:18 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: pH formula
Replies: 5
Views: 245

Re: pH formula

PKa = -logKa was also mentioned as well, but pretty sure that won't be on the final because that's 14B material?
by melodyso1K
Thu Jun 14, 2018 1:18 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: pH formula
Replies: 5
Views: 245

Re: pH formula

Agreed. And maybe (p = -log) as well?
by melodyso1K
Wed Jun 13, 2018 9:47 pm
Forum: Lewis Structures
Topic: lewis structure
Replies: 10
Views: 255

Re: lewis structure

melodyso1K wrote:Also, the element in the middle is the one that has to make the most bonds!

This was said today during one of the review sessions ^^
by melodyso1K
Wed Jun 13, 2018 9:46 pm
Forum: Lewis Structures
Topic: lewis structure
Replies: 10
Views: 255

Re: lewis structure

Also, the element in the middle is the one that has to make the most bonds!
by melodyso1K
Wed Jun 13, 2018 12:33 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Bent vs. Angular
Replies: 11
Views: 313

Re: Bent vs. Angular

Yes, it's interchangeable! In the review session today for the #3 on the practice exam we used "bent" and "angular" interchangeably.
by melodyso1K
Mon Jun 11, 2018 12:33 am
Forum: Administrative Questions and Class Announcements
Topic: Grading question
Replies: 11
Views: 647

Re: Grading question

It does. I asked about this in office hours before, if all your points add up to 250 points (50% of the overall grade), that is a C-
by melodyso1K
Mon Jun 11, 2018 12:30 am
Forum: Bond Lengths & Energies
Topic: Bond Length
Replies: 9
Views: 348

Re: Bond Length

Also, the shorter the bond length the stronger it is.
by melodyso1K
Mon Jun 11, 2018 12:22 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 885817

Re: Post All Chemistry Jokes Here

Q: What do you do with a sick chemist?
A: If you can't helium and you can't curium, then you may as well barium.
by melodyso1K
Mon Jun 11, 2018 12:18 am
Forum: Air Pollution & Acid Rain
Topic: Acid Rain
Replies: 3
Views: 262

Re: Acid Rain

I thought this was pretty interesting so I looked into it a bit:

CO2 is the biggest factor in the acidity of water. In the dissolved state in water CO2 + H2O <=> H2CO3. So as CO2 levels increase around Earth and H2CO3 increases, pH levels decrease.

Hope this answers your question!
by melodyso1K
Mon Jun 11, 2018 12:12 am
Forum: Hybridization
Topic: Hybrid Orbitals
Replies: 5
Views: 198

Re: Hybrid Orbitals

I recall our section saying we only going up to sp3 as well back in week 8.
by melodyso1K
Mon Jun 11, 2018 12:06 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Helpful Chart
Replies: 18
Views: 454

Re: Helpful Chart

These were all very great and very helpful, thanks everyone!
by melodyso1K
Mon Jun 04, 2018 6:15 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Helpful Chart
Replies: 18
Views: 454

Re: Helpful Chart

This chart is indeed helpful, thanks for sharing!
by melodyso1K
Mon Jun 04, 2018 6:11 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Helpful Chart
Replies: 18
Views: 454

Re: Helpful Chart

We made a similar chart in discussion too. I want to point out that I believe our TA mentioned something about the angles being less than 109.5 in some cases, I'm not exactly sure why or in what instances, but I think he mentioned lone pairs. I also think Lavelle said that we don't have to know the...
by melodyso1K
Mon Jun 04, 2018 6:07 pm
Forum: Lewis Acids & Bases
Topic: weak acids
Replies: 3
Views: 96

Re: weak acids

Weak acids are incompletely ionized in a solution, in the example in lecture today it says to setup an equilibrium to calculate concentrations
by melodyso1K
Mon Jun 04, 2018 6:06 pm
Forum: Lewis Acids & Bases
Topic: weak acids
Replies: 3
Views: 96

Re: weak acids

The example I wrote down for weak acids was CH3COOH molecules and a small portion of acetate ions, CH3COO-
by melodyso1K
Thu Apr 26, 2018 8:38 pm
Forum: Properties of Light
Topic: test 2
Replies: 18
Views: 540

Re: test 2

This was the announcement Professor Lavelle gave for Test 2: Test 2 covers material covered in Chapter 1 up to the end of 1.5. (wave and photon properties of light; Einstein equation; photoelectric effect; Bohr frequency condition; atomic spectra (electronic transitions); wave and particle propertie...
by melodyso1K
Mon Apr 23, 2018 12:17 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 885817

Re: Post All Chemistry Jokes Here

How often do I tell chemistry jokes? Periodically.
by melodyso1K
Mon Apr 23, 2018 12:10 am
Forum: Administrative Questions and Class Announcements
Topic: Test Time
Replies: 6
Views: 266

Re: Test Time

I don't think too many people finished on time for Test 1, at least to my understanding. Should start preparing for 8 questions in 40 minutes from now on.
by melodyso1K
Mon Apr 23, 2018 12:06 am
Forum: Properties of Light
Topic: Test 2 Material
Replies: 12
Views: 365

Re: Test 2 Material

The email says that that Chapter 1 homework problems: 3, 5, 7, 9, 11, 13, 15, 21, 23, 25, 27, 33, 37, 39, 41 should be helpful
by melodyso1K
Sun Apr 15, 2018 5:00 pm
Forum: Einstein Equation
Topic: Planck's constant [ENDORSED]
Replies: 3
Views: 170

Re: Planck's constant [ENDORSED]

The Planck's constant relates energy in a photon of electromagnetic radiation to the frequency of that radiation. The constant is approximately 6.626176 x 10^-34 J/s and can also be shown as "h" in h=E/v.
by melodyso1K
Sun Apr 15, 2018 4:51 pm
Forum: Administrative Questions and Class Announcements
Topic: Switching discussion [ENDORSED]
Replies: 6
Views: 237

Re: Switching discussion [ENDORSED]

That time doesn't work for me, sorry! Hope everything works out
by melodyso1K
Wed Apr 11, 2018 8:28 pm
Forum: Administrative Questions and Class Announcements
Topic: Switching discussion [ENDORSED]
Replies: 6
Views: 237

Re: Switching discussion [ENDORSED]

What time is the 1L discussion?
by melodyso1K
Wed Apr 11, 2018 8:14 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 885817

Re: Post All Chemistry Jokes Here

Argon and Neon walk into a bar during the French Revolution. The bartender said "We don't serve noble gasses here"
by melodyso1K
Wed Apr 11, 2018 8:03 pm
Forum: Properties of Light
Topic: HW 1.3 [ENDORSED]
Replies: 12
Views: 435

Re: HW 1.3 [ENDORSED]

Option A is incorrect because speed is constant! :D

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