Search found 30 matches
- Tue Mar 20, 2018 2:43 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
A sign outside the chemistry hotel reads "Great Day Rates, Even Better NO3's!"
- Tue Mar 20, 2018 2:40 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
He/she threw sodium chloride at me! That's a salt!
- Tue Mar 20, 2018 2:39 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
What did the scientist say when he/she found two isotopes of helium? HeHe.
- Tue Mar 20, 2018 2:35 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
Chemistry? More like cheMYSTERY because I have no idea what's going on...
- Tue Mar 20, 2018 2:25 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
I hate bad chemistry jokes. Hearing one really Hz my ears.
- Tue Mar 20, 2018 2:23 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
If you're serious about chemistry, the only frat you should be thinking about joining is Sig Fig. ;)
- Tue Mar 20, 2018 2:18 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Solids in cell diagrams
- Replies: 4
- Views: 737
Re: Solids in cell diagrams
You only use the single line to separate molecules that are in different states/phases (i.e. a solid and an aqueous solution). I'm pretty sure he made a mistake by writing that, and I think he pointed out that mistake during the review session too.
- Tue Mar 20, 2018 2:15 am
- Forum: Balancing Redox Reactions
- Topic: Acidic/ basic conditions
- Replies: 4
- Views: 726
Re: Acidic/ basic conditions
Balancing a basic solution just takes a bit longer and is a bit more complex since there are more steps. First you balance the oxygens by adding H2O, then you balance the hydrogens by adding H+ (this is where you would stop if it were an acidic solution), then you balance the H+ by adding OH-, then ...
- Tue Mar 20, 2018 2:11 am
- Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
- Topic: n: negative or positive
- Replies: 2
- Views: 1094
Re: n: negative or positive
Yeah, if you're talking about that equation mentioned above, the n itself is not negative, but the negative sign in the equation can make your final answer negative. n is just the number of moles of electrons.
- Tue Mar 20, 2018 2:07 am
- Forum: Balancing Redox Reactions
- Topic: periodic trends
- Replies: 3
- Views: 658
Re: periodic trends
You can also tell an element's reducing and oxidizing power by looking at its cell potential for the redox reaction. The larger the cell potential number, the more oxidizing power the element has. The smaller the cell potential number, the more reducing power it has.
- Tue Mar 20, 2018 2:00 am
- Forum: Calculating Work of Expansion
- Topic: reversible and irreversible expansion
- Replies: 3
- Views: 867
Re: reversible and irreversible expansion
The equation for irreversible expansion is the one that is used more often and is more common. I'm pretty sure you'd only need to use the equation for reversible expansion if the pressure is not constant.
- Tue Mar 20, 2018 1:56 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
Water: Hey oil! Wanna hang out?
Oil: Sorry. I can't mix with you guys.
Water: Hydrophobe!
Oil: Sorry. I can't mix with you guys.
Water: Hydrophobe!
- Tue Mar 20, 2018 1:50 am
- Forum: Balancing Redox Reactions
- Topic: Adding OH
- Replies: 6
- Views: 1002
Re: Adding OH
You only add OH- when dealing with basic solutions. So, when balancing a basic solution, you start by adding H2O to balance the oxygens. Then you add H+ to balance the hydrogens. (This is where you would stop if it were an acidic solution.) Then you add OH- to balance the H+ (because you can't have ...
- Tue Mar 20, 2018 1:40 am
- Forum: General Science Questions
- Topic: Grade
- Replies: 8
- Views: 1534
Re: Grade
I'm pretty sure there will be a curve for this class, although I don't know how much it will help. I had him last quarter and he curved for 14A.
- Sat Mar 17, 2018 5:23 pm
- Forum: Calculating Work of Expansion
- Topic: What w equation to use
- Replies: 5
- Views: 2914
Re: What w equation to use
Was question 4A from the midterm a reversible expansion problem? I didn't know which formula to use so I did it both ways.
- Mon Feb 12, 2018 12:55 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
"Want to talk about Sodium?"
----Na.
"Nitric Oxide?"
----NO.
"Oxygen, Magnesium, Phosphorous, Iodine, Sulfur, or Fluorine?"
----OMg PIS OFF.
"...Potassium?"
----K.
----Na.
"Nitric Oxide?"
----NO.
"Oxygen, Magnesium, Phosphorous, Iodine, Sulfur, or Fluorine?"
----OMg PIS OFF.
"...Potassium?"
----K.
- Mon Feb 12, 2018 12:49 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
"What's the difference between a proton and an electron?"
"I'm not positive, but I think a proton is..."
"I'm not positive, but I think a proton is..."
- Mon Feb 12, 2018 12:42 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
Electron: I have a problem man. I think I might be a compulsive liar...
Proton: Are you positive?
Electron: Yeah.
Proton: I guess you are a liar.
Proton: Are you positive?
Electron: Yeah.
Proton: I guess you are a liar.
- Mon Feb 05, 2018 12:10 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
Me: My favorite jokes are about Cobalt, Radon, and Yttrium.
Person: Why's that?
Me: Because I love CoRnY chemistry jokes.
Person: Why's that?
Me: Because I love CoRnY chemistry jokes.
- Mon Feb 05, 2018 12:06 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
Q: What does the leader of an electron army say when they go to war?
A: CHARGE!
A: CHARGE!
- Sun Feb 04, 2018 11:59 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Question: Refrigerator Cooling
- Replies: 3
- Views: 540
Question: Refrigerator Cooling
I was wondering, when you open a refrigerator in a closed room, why doesn’t the room become colder? Why does it become warmer? Shouldn’t the cold air leave the refrigerator and cool the surroundings according to the laws of entropy?
- Sun Jan 28, 2018 7:20 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
Q: How did Carbon propose to Hydrogen?
A: With a "carbonkneel"
A: With a "carbonkneel"
- Sun Jan 28, 2018 7:15 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
Q: Why can't lawyers do NMR?
A: Bar magnets have poor homogeneity.
A: Bar magnets have poor homogeneity.
- Sun Jan 28, 2018 7:03 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
Valentine’s Day is coming up, so here’s a cute science love song filled with a bunch of puns. ;)
https://m.youtube.com/watch?v=pocNl2YhZdM
https://m.youtube.com/watch?v=pocNl2YhZdM
- Sun Jan 21, 2018 11:54 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
Chemistry Pickup Line:
You’re like an exothermic reaction—you spread hotness everywhere.
You’re like an exothermic reaction—you spread hotness everywhere.
- Sun Jan 21, 2018 11:53 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
Chemistry Pickup Line:
Forget hydrogen, you’re my number one element. ;)
Forget hydrogen, you’re my number one element. ;)
- Sun Jan 21, 2018 11:30 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3890602
Re: Post All Chemistry Jokes Here
Party hard in the summer, they said. So I decided to drop the base on them.
- Sun Jan 14, 2018 4:32 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: q and w
- Replies: 5
- Views: 675
Re: q and w
As defined by the textbook, “q is the energy supplied to the system as heat and w is the energy supplied the system as work” (page 278). Basically, q refers to the energy that is transferred or absorbed in a system and work is caused by either an internal or external force that is applied to the sys...
- Sun Jan 14, 2018 4:27 pm
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Work
- Replies: 1
- Views: 375
Re: Work
This depends on whether the work is positive or negative. Work done on the system is positive and work done by the system is negative. Here is an example: A gas always exerts force on the walls of its container. It is always trying to continuously expand/push in the outward direction. This is the sy...
- Sun Jan 14, 2018 4:16 pm
- Forum: Calculating Work of Expansion
- Topic: Homework Question 8.3
- Replies: 4
- Views: 656
Re: Homework Question 8.3
By definition, “q is the energy supplied to the system as heat” (page 278 from the textbook). In this specific question, there is no heat being supplied to the system. There is no heat needed to compress a bicycle pump. There is only energy (w) being supplied through compression. Therefore, q = 0 an...