Search found 31 matches
Search found 31 matches • Page 1 of 1
- Sat Dec 08, 2018 3:12 pm
- Forum: Air Pollution & Acid Rain
- Topic: Acid Rain Damage [ENDORSED]
- Replies: 5
- Views: 1220
Do we think that there are going to be question on the final regarding the chemical makeup and chemical reactions that take place during the formation of acid rain?
- Wed Dec 05, 2018 8:34 pm
- Forum: Administrative Questions and Class Announcements
- Topic: FINAL PRACTICE - Lyndon's Churro Review Session [ENDORSED]
- Replies: 118
- Views: 13792
Thank you!! Your sessions and review problems are always so helpful!!
- Mon Nov 12, 2018 4:57 pm
- Forum: Ionic & Covalent Bonds
- Topic: Ionic Bonds with Covalent Character
- Replies: 3
- Views: 212
They are less soluble in water because the covalent bonds are holding the atoms together stronger than with the other type of bond. It takes more to break apart the covalent bond.
- Mon Nov 12, 2018 4:55 pm
- Forum: Interionic and Intermolecular Forces (Ion-Ion, Ion-Dipole, Dipole-Dipole, Dipole-Induced Dipole, Dispersion/Induced Dipole-Induced Dipole/London Forces, Hydrogen Bonding)
- Topic: Dipoles and Electronegativity
- Replies: 4
- Views: 260
What happens if the atoms are very close in electronegativity? Then is the dipole moment very small?
Hi! I've heard that test two is only going to be on the things that we have learned in lecture. However, I'd prepare just in case because you never know when a curveball will be thrown!
- Sun Oct 21, 2018 4:28 pm
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: shells
- Replies: 2
- Views: 139
Like stated above, Dr. Lavelle said that that was beyond what is required to be known for exam day. You do, however, need to know how to apply x,y, and z to the topic!
On Dr. Lavelle's website, he has outlines for each section that covers the content that we should know for the tests in detail. What outlines does test two cover? I'm trying to get ahead in my studying!
- Sun Oct 14, 2018 6:03 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Solving for frequency
- Replies: 3
- Views: 166
Hz and S-1 are both units of frequency, but in almost every additional example that I have come across, the frequency has been measured in Hz. Would an equivalent in both be acceptable?
- Sun Oct 14, 2018 6:01 pm
- Forum: DeBroglie Equation
- Topic: De Broglie Equation Example
- Replies: 4
- Views: 217
What would be an example of something that does have measurable wavelength properties? I know Dr. Lavelle mentioned something in class about a baseball, but that is not really applicable to this class's content.
- Sun Oct 14, 2018 5:58 pm
- Forum: Properties of Electrons
- Topic: Wave Length Calculations
- Replies: 5
- Views: 189
I think it's crazy that any wavelength smaller than 10^-18 is just a theory. For me, it is hard to grasp the concept that 10^-18 is measurable, but just .000001 smaller than that number is not considered measurable. What is the defining line for measurable vs. non-measurable.
- Thu Oct 11, 2018 1:34 pm
- Forum: Ideal Gases
- Topic: Reading the textbook [ENDORSED]
- Replies: 187
- Views: 109100
I read the textbook after a lecture when I don't fully understand the topic while discussed in class. While the book uses some different symbols/terms than in lecture, I find that reading the book explains the material in an alternate fashion, which sometimes helps. However, I always go on Dr. Lavel...
Hi! Just make sure that when you do the conversions that all of the measurements are in the same units. If not, the answer will be wrong. In terms of the final answer, i've read to put them in meters, unless otherwise stated in the problem!
- Tue Oct 09, 2018 11:12 pm
- Forum: Limiting Reactant Calculations
- Topic: How to determine the limiting reactant???? [ENDORSED]
- Replies: 8
- Views: 2013
Hi guys! So in reviewing for the first test, I have found myself stuck on trying to determine the limiting reactant. I have tried numerous times attempting what Dr. Lavelle did in class to determine it, but it just isn't clicking. Does anyone have any advice??
- Thu Oct 04, 2018 9:26 pm
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Homework Problem E.21, 6th Edition
- Replies: 1
- Views: 83
Hi guys, so as I work through problem E.21 part B, i realize that there is a number in scientific notation that seems off to me. It is 25.92x10^-3.. I thought when you are in scientific notation that there is only supposed to be one figure before the decimal place? Please help!
- Tue Oct 02, 2018 6:39 pm
- Forum: General Science Questions
- Topic: Rusty on High School Chem [ENDORSED]
- Replies: 220
- Views: 143130
Hi everyone! I hadn't taken a chemistry course since my sophomore year in high school, and after the first lecture, I was a bit lost in Chem14A's content. However, I have found that using Dr. Lavelle's website (his audio/visual modules) is quite helpful in reviewing the material that I should've mas...
- Tue Oct 02, 2018 6:32 pm
- Forum: SI Units, Unit Conversions
- Topic: Formula Units: Molecules or Atoms
- Replies: 5
- Views: 243
In the converting process, when/where do you use Avogadro's Number? I know the general steps in this process, but get quite confused when it is time to divide/multiple by it.
- Tue Oct 02, 2018 3:08 pm
- Forum: Significant Figures
- Topic: Rules For Significant Figures
- Replies: 6
- Views: 456
There was one thing that Dr. Lavelle mentioned in class that really helped me understand how to determine how many significant figures are present in a number. If you are unsure on the amount of significant figures in a number, convert the number into scientific notation. The number of didgets in th...