Search found 10 matches
- Sun Jan 24, 2016 8:34 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3637352
Re: Chemistry Jokes
Did you know that you can cool yourself to -273.15˚C and still be 0k?
- Sun Jan 17, 2016 12:41 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3637352
Re: Chemistry Jokes
What did the chemist say when he found two isotopes of helium? HeHe
- Sun Jan 10, 2016 9:32 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Units
- Replies: 3
- Views: 822
Re: Units
you can basically change the KJ to joules like you said. you just have to make sure that your units cancel out in the end to end up with the desired units. it also depends on the other variables you are given, if you are given the heat capacity in kj then use kj if you are given the values in joules...
- Fri Nov 20, 2015 6:44 pm
- Forum: Administrative Questions and Class Announcements
- Topic: Review video of quiz 2 Fall 2015
- Replies: 2
- Views: 986
Re: Review video of quiz 2 Fall 2015
Video Quiz 2
- Fri Oct 16, 2015 3:57 pm
- Forum: Ionic & Covalent Bonds
- Topic: Carbon and Oxygen- Electron Affinity
- Replies: 2
- Views: 4241
Re: Carbon and Oxygen- Electron Affinity
carbon has more electron Affinity since its p orbital only has 2 electrons so it is not even half full.therefore , it wants to grab electrons. it is an exception to the rule since the trend increase as you go up the group to the right across the period. you also have to keep in mind that for O and n...
- Sun Oct 04, 2015 1:23 pm
- Forum: Properties of Light
- Topic: Speed
- Replies: 3
- Views: 763
Re: Speed
I believe he said we would be using 3.0*10^8
- Fri Oct 02, 2015 9:39 pm
- Forum: Einstein Equation
- Topic: H.W. 1.23
- Replies: 1
- Views: 512
Re: H.W. 1.23
KeV is a unit used in measuring energy (energy in electron volts) or put simply another way measuring energy just as we use lbs or kgs to measure weight or miles or kilometers to measure distance Here are some of the conversion factors: Kilo means it is 1000ev =1KeV 140.511keV=140511 eV 1eV=1.602176...
- Fri Oct 02, 2015 9:30 pm
- Forum: Molarity, Solutions, Dilutions
- Topic: G7
- Replies: 7
- Views: 2540
Re: G7
Ok so to start off we have to find out how much grams of KNO3 are in the sample of 510 g The first step is to to get 5.45 from a percentage to a decimal so we divide it by 100 and it becomes .0545. Then we multiply .0545 by the 510 g to get how much grams of KNO3 were in this aqueous solution which ...
- Fri Oct 02, 2015 9:03 pm
- Forum: Photoelectric Effect
- Topic: Electrons and Light
- Replies: 1
- Views: 579
Re: Electrons and Light
In the photoelectric effect experiment it wasn’t really a UV/metal interaction but rather a photon electron relationship. So I will try to explain the experiment and maybe you will understand it a little better. So the objective of the Photoelectric experiment was to see what type of wave is require...
- Fri Oct 02, 2015 8:02 pm
- Forum: Photoelectric Effect
- Topic: Electron Emission of Light
- Replies: 1
- Views: 531
Re: Electron Emission of Light
If I am understanding this right the electron does not stop in the process of returning to its ground state but rather it just drop straight back releasing the same original amount of energy needed to excite the electron.( I think this is because an electron in n1 that is excited to n2 would have to...