Search found 9 matches

by Spencer Johnson 1C
Wed Mar 09, 2016 7:08 pm
Forum: *Nucleophilic Substitution
Topic: SN2 vs. electrophilic addition
Replies: 1
Views: 708

Re: SN2 vs. electrophilic addition

Electrophilic addition involves an electrophile being added to a molecule such as the H+ from HBr being added to CH3CHCH2 whereas Sn2 involves a nucleophile being added to a molecule such as OH- basically they're opposites of eachother.
by Spencer Johnson 1C
Mon Mar 07, 2016 4:48 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Winter 2012 Final Question 3
Replies: 1
Views: 371

Winter 2012 Final Question 3

In part (a) how do you determine which of the two metals is the anode and which is the cathode? And in part (d) how do you get n is equal to 6?
by Spencer Johnson 1C
Mon Feb 29, 2016 4:14 pm
Forum: *Alkanes
Topic: Naming alkanes
Replies: 2
Views: 288

Re: Naming alkanes

The correct answer would be 4-methyl-5-(1,1-dimethylethyl)-octane because methyl comes before methylethyl alphabetically
by Spencer Johnson 1C
Wed Feb 24, 2016 3:59 pm
Forum: *Alkanes
Topic: Naming Compounds (# and -)
Replies: 1
Views: 236

Re: Naming Compounds (# and -)

To answer your first question, it doesn't matter which way you draw it because if you think about it it would be the same you would just have the molecule turned around. The number really only matters for a location on the chain not from which side it belongs because four from the left would be four...
by Spencer Johnson 1C
Sun Feb 07, 2016 4:26 pm
Forum: Gibbs Free Energy Concepts and Calculations
Topic: 2011 midterm #5
Replies: 1
Views: 239

Re: 2011 midterm #5

because free energy is what is given in the question
by Spencer Johnson 1C
Sat Jan 30, 2016 11:16 am
Forum: Balancing Redox Reactions
Topic: Oxidation States
Replies: 8
Views: 1032

Re: Oxidation States

I don't think so. I think he said they would be given to us on the test kind of like the bond enthalpies were given.
by Spencer Johnson 1C
Sat Jan 23, 2016 2:35 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: positive or negative values
Replies: 1
Views: 265

Re: positive or negative values

It usually depends on the wording of the question. For example, if heat is absorbed by the system q is positive and the reaction is endothermic but if heat is released then q is negative and the reaction is exothermic.
by Spencer Johnson 1C
Thu Jan 14, 2016 8:46 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Which can be exchanged: matter or energy?
Replies: 4
Views: 708

Re: Which can be exchanged: matter or energy?

In a closed system, energy can be exchanged but matter cannot. This is different than an open system, in which both matter and energy can be exchanged, or in an isolated system, in which neither matter or energy can be exchanged.
by Spencer Johnson 1C
Wed Jan 06, 2016 9:58 pm
Forum: Phase Changes & Related Calculations
Topic: Hess's Law
Replies: 8
Views: 990

Re: Hess's Law

Dr. Lavelle said the method we used would depend on the information given to us in the problem.

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