Search found 10 matches

by Anthony Cannizzaro 3J
Sun Mar 19, 2017 12:36 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7569
Views: 1011787

Re: Post All Chemistry Jokes Here

A graduated cylinder and a dropout cylinder.
by Anthony Cannizzaro 3J
Sat Mar 18, 2017 3:42 pm
Forum: *Constitutional and Geometric Isomers (cis, Z and trans, E)
Topic: Final 2016 Question 7
Replies: 2
Views: 608

Re: Final 2016 Question 7

For the conformation of cyclohexanes some basic guidelines are that the conformation is a chair and in a chair axial groups must alternate pointing up and down. In general for chair conformations larger substituents are placed equatorially because there is more room and less strain. However in the c...
by Anthony Cannizzaro 3J
Sat Mar 18, 2017 2:55 pm
Forum: Reaction Mechanisms, Reaction Profiles
Topic: Winter 2016 Final, Q6
Replies: 1
Views: 250

Winter 2016 Final, Q6

Can someone explain what's going on in step 3? Why is the bond between the O - H breaking to reform the double bond with C - O?
by Anthony Cannizzaro 3J
Sat Mar 18, 2017 2:44 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Drawing Line Structures of Cyclohexanes
Replies: 1
Views: 426

Re: Drawing Line Structures of Cyclohexanes

I believe you'd only have to draw the conformation if asked specifically to draw the conformation of the molecule.
by Anthony Cannizzaro 3J
Sat Mar 18, 2017 1:57 pm
Forum: *Alkanes
Topic: Final 2013 Q5 - Transition States
Replies: 1
Views: 445

Re: Final 2013 Q5 - Transition States

The transition state occurs when the electrons from the NH - are being transferred to the C with the attached OH but before the OH has been removed. The two H's are attached to the same C but aren't show initially because they are implied. They are only shown so that the molecular geometry can be mo...
by Anthony Cannizzaro 3J
Sat Mar 18, 2017 1:39 pm
Forum: General Rate Laws
Topic: Unique Rate of Reaction
Replies: 1
Views: 246

Re: Unique Rate of Reaction

A reaction rate can be written differently depending on which reactant or product you choose since the concentrations of reactants and products may change at different rates. A unique rate is a rate of appearance/disappearance of any of the species in a reaction divided by its stoichiometric coeffic...
by Anthony Cannizzaro 3J
Sat Mar 18, 2017 1:36 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Winter 2014 Final Exam #1
Replies: 1
Views: 279

Re: Winter 2014 Final Exam #1

Because we given exact ΔH° values and they are all integers when we add them using Hess' Law no rounding is required.
by Anthony Cannizzaro 3J
Sat Mar 18, 2017 1:22 pm
Forum: *Cyclohexanes (Chair, Boat, Geometric Isomers)
Topic: Winter 2011 Final Q8C
Replies: 2
Views: 699

Re: Winter 2011 Question 8C

I don't believe it would be as stable because if the ethyl group is axial it would cause steric strain.
by Anthony Cannizzaro 3J
Sat Mar 18, 2017 1:11 pm
Forum: Phase Changes & Related Calculations
Topic: Winter 2016 Final Exam Q3C
Replies: 1
Views: 302

Re: Winter 2016 Final Exam Q3C

You first have to break the reaction into the two half reactions of oxidation and reduction.

In this case Br2 is being reduced (cathode) which gives us Br2 (aq) + 2e- -> 2Br-(aq)
by Anthony Cannizzaro 3J
Sun Feb 12, 2017 9:11 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7569
Views: 1011787

Re: Post All Chemistry Jokes Here

What do you do with a sick chemist?

Well if you can't helium, and you can't curium, you might as well barium.

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