Search found 10 matches

by Erika Gonzalez 1F
Thu Mar 16, 2017 1:13 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019561

Re: Post All Chemistry Jokes Here

Jokes about Heavy elements? All I could think of was U
by Erika Gonzalez 1F
Mon Mar 13, 2017 1:10 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019561

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."
by Erika Gonzalez 1F
Mon Mar 06, 2017 9:15 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019561

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."
by Erika Gonzalez 1F
Sat Mar 04, 2017 11:26 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7609
Views: 1019561

Re: Post All Chemistry Jokes Here

Oxygen and Potassium?

They're OK. Nothing Special.
by Erika Gonzalez 1F
Sun Feb 26, 2017 10:51 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Transition States and Intermediates
Replies: 2
Views: 326

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?
by Erika Gonzalez 1F
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: 299

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)
by Erika Gonzalez 1F
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: 261

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.
by Erika Gonzalez 1F
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: 214

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...
by Erika Gonzalez 1F
Sat Jan 21, 2017 10:27 pm
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Isothermal Reactions: Reversible expansion
Replies: 1
Views: 268

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.

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