Search found 18 matches
- Sat Dec 09, 2017 7:32 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Assumption for Subtracting X in Ka or Kb calculation [ENDORSED]
- Replies: 3
- Views: 807
Re: Assumption for Subtracting X in Ka or Kb calculation [ENDORSED]
since the x value will be so small then it will most likely not change the concentration of the reactants such as Professor Lavelle mentioned in class where if you have 1 million dollars and take away a dollar you still pretty much have 1 million dollars.
- Sat Dec 09, 2017 7:14 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Post Assessment 2 #24
- Replies: 2
- Views: 2447
Re: Post Assessment 2 #24
bar is the atmospheric pressure at sea level so it can also be translated as as 100 kilopascals which is about 1 atm.
- Sun Dec 03, 2017 10:45 am
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: pH and pOH
- Replies: 10
- Views: 1344
Re: pH and pOH
The pH measures the [H+] while pOH measures [OH-]. You start of by taking the -log of one of the concentration either [H+] or [OH-] and then to solve for the other concentration then use the following equation; pH+pOH=14.
- Sun Dec 03, 2017 10:37 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2759169
Re: Post All Chemistry Jokes Here
"Making bad chemistry jokes because all the good ones Argon"
- Wed Nov 22, 2017 7:27 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bent vs. Angular
- Replies: 5
- Views: 975
Re: Bent vs. Angular
Angular and bent mean the same thing.
- Wed Nov 22, 2017 7:25 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Calculating Equilibrium Composition [ENDORSED]
- Replies: 2
- Views: 399
Re: Calculating Equilibrium Composition [ENDORSED]
I think that at this point we won't be given two negative numbers so I would just focus on the other possibilities.
- Sat Nov 18, 2017 9:33 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2759169
Re: Post All Chemistry Jokes Here
What kind of dogs do chemists have?
Laboratory Retrievers
Laboratory Retrievers
- Sat Nov 18, 2017 9:27 pm
- Forum: Biological Examples
- Topic: Other Biological Examples
- Replies: 5
- Views: 954
Re: Other Biological Examples
These examples seemed interesting as well.
https://nsepulvedachemhonors.weebly.com ... etals.html
https://nsepulvedachemhonors.weebly.com ... etals.html
- Sun Nov 12, 2017 5:42 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Shape Memorization [ENDORSED]
- Replies: 7
- Views: 1941
Re: Shape Memorization [ENDORSED]
I would say that looking at visual examples will be the most helpful way to memorize the shapes.
- Sun Nov 12, 2017 5:39 pm
- Forum: DeBroglie Equation
- Topic: De Broglie Equation [ENDORSED]
- Replies: 4
- Views: 741
Re: De Broglie Equation [ENDORSED]
The De Broglie equation is used to find the wavelength but you can find the energy of a photon by rearranging other equations.
- Sun Nov 05, 2017 4:14 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Which one do I draw?
- Replies: 5
- Views: 733
Re: Which one do I draw?
I agree but I feel that we are going to mostly be asked to draw the lewis structure and just say what is the molecular shape like in the examples we did on Friday.
- Sun Nov 05, 2017 1:24 pm
- Forum: Electronegativity
- Topic: Comparing Electronegativity of Elements
- Replies: 5
- Views: 1473
Re: Comparing Electronegativity of Elements
There are a few exceptions to electronegativity, "Important exceptions of the above rules include the noble gases, lanthanides, and actinides. The noble gases possess a complete valence shell and do not usually attract electrons. The lanthanides and actinides possess more complicated chemistry ...
- Sun Oct 22, 2017 11:12 pm
- Forum: Photoelectric Effect
- Topic: Quantized Energy Level
- Replies: 5
- Views: 904
Re: Quantized Energy Level
I just wanted to add that Quantum also means "how much?'
- Sun Oct 22, 2017 11:03 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2759169
Re: Post All Chemistry Jokes Here
What did one charged atom say to the other? I've got my ion you.
- Sun Oct 15, 2017 6:39 pm
- Forum: Photoelectric Effect
- Topic: Balmer vs Lyman [ENDORSED]
- Replies: 5
- Views: 782
Re: Balmer vs Lyman [ENDORSED]
The equation sheet that Dr. Lavelle showed us in class in Friday is posted under Constants and Equations which shows all the ones that will be given to us.
- Sun Oct 15, 2017 6:34 pm
- Forum: Quantum Numbers and The H-Atom
- Topic: Quantized Energy
- Replies: 5
- Views: 1013
Re: Quantized Energy
Quantized energy can only have certain values and the n energy levels are the energy gaps which both can relate to show, "every atom has certain energy levels, which are strongly related with the mass of the atom. ... When they jump from a higher energy state to a lower one, the energy differen...
- Sun Oct 08, 2017 8:15 pm
- Forum: SI Units, Unit Conversions
- Topic: SI units [ENDORSED]
- Replies: 6
- Views: 858
Re: SI units [ENDORSED]
If you are talking about SI Fundamental Units it will be Mass(kg), length(m), and time(s) but there is also SI Derived Units which would be volume (m^3) and density.
- Sun Oct 08, 2017 8:00 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 2759169
Re: Post All Chemistry Jokes Here
Q: What do you call a clown who's in jail?
A: A silicon.
A: A silicon.