Search found 20 matches

by Eliza_Beglari_2L
Sat Mar 18, 2017 10:14 pm
Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
Topic: Nernst Equation
Replies: 3
Views: 334

Re: Nernst Equation

No it can be at any temperature. Only the Nernst Equation that is E=E(standard)- (.05916)/n)*logQ needs to be at 298K.
by Eliza_Beglari_2L
Sat Mar 18, 2017 10:08 pm
Forum: Entropy Changes Due to Changes in Volume and Temperature
Topic: Winter 2013 Final 1B
Replies: 4
Views: 479

Re: Winter 2013 Final 1B

If volume increases and temperature decreases, pressure MUST decrease to satisfy the PV=nRT equation, so there's actually no way pressure would have been constant. With that said, the above post is correct.
by Eliza_Beglari_2L
Fri Mar 17, 2017 10:23 pm
Forum: *Alkenes
Topic: Cyclohexene example in course reader [ENDORSED]
Replies: 1
Views: 550

Cyclohexene example in course reader [ENDORSED]

On page 102 of the course reader, there are more IUPAC naming examples of alkenes. The third example is named 1,6-dichlorocyclohexene. Why is it not 1,2-dichlorocyclohexene?
by Eliza_Beglari_2L
Wed Mar 15, 2017 8:04 pm
Forum: *Organic Reaction Mechanisms in General
Topic: Order When Naming
Replies: 1
Views: 384

Order When Naming

When naming a cyclohexane that has 1 ethyl and 2 methyl substituent on either the 1st or 3rd carbon, would you put the 1 with the ethyl and the 3 with the methyl or the other way around? (Is it 1-ethyl-3,3-dimethyl-cyclohexane or 3-ethyl-1,1-dimethyl-cyclohexane?)
by Eliza_Beglari_2L
Mon Feb 27, 2017 5:31 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Determining Slow Step
Replies: 1
Views: 253

Determining Slow Step

When comparing the K of two different reactions, does the larger K mean a faster or slower reaction?
by Eliza_Beglari_2L
Wed Feb 15, 2017 10:28 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7580
Views: 1012699

Re: Post All Chemistry Jokes Here

Q: Why was the mole of oxygen molecules excited when he left the singles bar?
A: He got Avogadro's number!
by Eliza_Beglari_2L
Fri Feb 10, 2017 9:50 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7580
Views: 1012699

Re: Post All Chemistry Jokes Here

An atom says, "I think I lost an electron." His friend asks, "Are you sure?" and the atom replies, "I'm positive."
by Eliza_Beglari_2L
Fri Feb 10, 2017 9:44 pm
Forum: Calculating Work of Expansion
Topic: Which process does more work?
Replies: 3
Views: 457

Which process does more work?

From Chapter 8 Number 11: A piston confines 0.200 mol Ne(g) in 1.20 L at 25 degrees C. Two experiments are performed. (a) The gas is allowed to expand through an additional 1.20 L against a constant pressure of 1.00 atm (b) The gas is allowed to expand reversibly and isothermally to the same final v...
by Eliza_Beglari_2L
Thu Feb 02, 2017 7:22 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7580
Views: 1012699

Re: Post All Chemistry Jokes Here

I have many chemistry jokes... I'm just afraid they won't get a good reaction.
by Eliza_Beglari_2L
Thu Feb 02, 2017 7:20 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7580
Views: 1012699

Re: Post All Chemistry Jokes Here

Have you heard the one about a chemist who was reading a book about helium?

He just couldn't put it down
by Eliza_Beglari_2L
Sat Dec 03, 2016 2:07 pm
Forum: Photoelectric Effect
Topic: Units in Photoelectric Effect
Replies: 1
Views: 268

Re: Units in Photoelectric Effect

Typically the units should be in Joules/atom.
by Eliza_Beglari_2L
Wed Nov 30, 2016 10:43 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: Ka values in multiple reactions
Replies: 1
Views: 675

Ka values in multiple reactions

Since polyprotic acids can donate more than one proton there is more than one reaction and more than one Ka value found. After finding each Ka of each reaction, why do you multiply the Kas together to get the overall K instead of adding them?
by Eliza_Beglari_2L
Fri Nov 18, 2016 9:56 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7580
Views: 1012699

Re: Post All Chemistry Jokes Here

What do you do with a sick chemist?
You can't helium, you can't curium, so you might as well barium.
by Eliza_Beglari_2L
Mon Oct 31, 2016 6:17 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Homework Question on Pollarding Power of Cations
Replies: 1
Views: 289

Homework Question on Pollarding Power of Cations

Can someone please give the answer and explanation to the question below?

Arrange the cations Rb+, Be2+, Sr2+ in order of increasing polarizing power. Give an explanation of your arrangement.
by Eliza_Beglari_2L
Sun Oct 30, 2016 4:29 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Seesaw angles
Replies: 1
Views: 293

Re: Seesaw angles

Yes, the angles are slightly less than 90 and 180 degrees
by Eliza_Beglari_2L
Tue Oct 18, 2016 1:04 pm
Forum: Ionic & Covalent Bonds
Topic: Difference between Ionic bonds and Molecules Lewis Strructure [ENDORSED]
Replies: 1
Views: 312

Difference between Ionic bonds and Molecules Lewis Strructure [ENDORSED]

Why are Ionic bonds' Lewis structures look different from the normal molecules lewis structures? For example, in our course reader the lewis formula for potassium chloride on page 76. Usually the normal lewis structures do not have brackets, what do these brackets for the ionic bonds mean?
by Eliza_Beglari_2L
Fri Oct 14, 2016 1:31 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: Definition of Orbitals
Replies: 1
Views: 340

Definition of Orbitals

Are spdf referred to as subshells or orbitals? Do orbitals mean m?
by Eliza_Beglari_2L
Sun Oct 09, 2016 9:51 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7580
Views: 1012699

Re: Post All Chemistry Jokes Here

I dont trust atoms, I heard they make up everything.
by Eliza_Beglari_2L
Sun Oct 02, 2016 10:43 pm
Forum: Student Social/Study Group
Topic: CHEM JOKES
Replies: 29
Views: 3486

Re: CHEM JOKES

I make horrible science puns too but only periodically.

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