Search found 10 matches
- Thu Mar 16, 2017 1:13 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3663445
Re: Post All Chemistry Jokes Here
Jokes about Heavy elements? All I could think of was U
- Mon Mar 13, 2017 1:10 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3663445
Re: Post All Chemistry Jokes Here
Which three elements are most important to the practice of medicine?
He, Cm, Ba
If you can't "helium" or "curium," then you have to "barium."
He, Cm, Ba
If you can't "helium" or "curium," then you have to "barium."
- Mon Mar 06, 2017 9:15 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3663445
Re: Post All Chemistry Jokes Here
Two ions walk out of a bar...
The first says, "I left my electrons inside."
The second says, "Are you sure?"
"I'm positive."
The first says, "I left my electrons inside."
The second says, "Are you sure?"
"I'm positive."
- Sat Mar 04, 2017 11:30 am
- Forum: *Organic Reaction Mechanisms in General
- Topic: Transition States and Intermediates
- Replies: 2
- Views: 731
Re: Transition States and Intermediates
Thank you!!
- Sat Mar 04, 2017 11:26 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3663445
Re: Post All Chemistry Jokes Here
Oxygen and Potassium?
They're OK. Nothing Special.
They're OK. Nothing Special.
- Sun Feb 26, 2017 10:51 pm
- Forum: *Organic Reaction Mechanisms in General
- Topic: Transition States and Intermediates
- Replies: 2
- Views: 731
Transition States and Intermediates
Can someone please elaborate more on transition states and intermediates?
transition states have partially formed bonds and intermediates have fully formed bonds, but how can you tell in a reaction? Is the transition state given?
transition states have partially formed bonds and intermediates have fully formed bonds, but how can you tell in a reaction? Is the transition state given?
- Sun Feb 12, 2017 8:15 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Writing the Cell Diagram for Galvanic Cells
- Replies: 1
- Views: 746
Writing the Cell Diagram for Galvanic Cells
Can someone explain how to write the cell diagram? Does the anode go first then the salt bridge and then the cathode along with the metal?
Ex: Zn(s)|Zn^2+(aq)||NO3-(aq)|NO2(g)|Pt(s)
Ex: Zn(s)|Zn^2+(aq)||NO3-(aq)|NO2(g)|Pt(s)
- Sun Feb 05, 2017 8:00 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Anode and Cathode placement in Galvanic/Voltaic Cells
- Replies: 2
- Views: 598
Anode and Cathode placement in Galvanic/Voltaic Cells
For a Galvanic cell, does the anode need to be on the left side and the cathode on the right at all times? Or can it be vise versa? And can someone elaborate more on the cell potential? I just know that it is the maximum potential/voltage of the cell.
- Sun Jan 29, 2017 11:44 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: Quiz 1 Question 7 (increase in entropy)
- Replies: 1
- Views: 2341
Quiz 1 Question 7 (increase in entropy)
Question 7 on Quiz 1 in the course reader (pg 114) It is asking which of the processes leads to an increase in entropy. I get the reason why 2 and 3 processes lead to an increase in entropy, but I don't get why 5 doesn't lead to an increase in entropy? 5) A glass of water loses 100 J of energy rever...
- Sat Jan 21, 2017 10:27 pm
- Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
- Topic: Isothermal Reactions: Reversible expansion
- Replies: 1
- Views: 617
Isothermal Reactions: Reversible expansion
For an isothermic reaction, will it always have reversible expansion? And I don't quite understand the concept of the reversible expansion diagram in the course reader on page 30. I only know that it occurs when the pressure is changing within the expansion of the gas.