Search found 9 matches

by Taylor_Lam_1E
Sun Mar 19, 2017 10:16 am
Forum: *Alkanes
Topic: Numbering
Replies: 1
Views: 257

Numbering

When it comes to numbering alkanes, does it matter where you start? Like in question 5C on quiz 3, where it was a cyclobutane with ethyl and methyl substituents, what would be the 1 and what would be the 3?
by Taylor_Lam_1E
Fri Mar 03, 2017 11:05 pm
Forum: *Alkanes
Topic: Naming the Molecule
Replies: 1
Views: 135

Naming the Molecule

How do you know when to use the suffix -ane vs the suffix -yl? Like are all the groups suppose to end in a -yl except when you are labeling the skeleton?
by Taylor_Lam_1E
Wed Feb 22, 2017 12:47 am
Forum: Method of Initial Rates (To Determine n and k)
Topic: Order Rates
Replies: 1
Views: 222

Order Rates

When calculating the overall order of a reaction when given a set of experimental data, how do you know which experiments to compare?
by Taylor_Lam_1E
Tue Feb 14, 2017 9:44 pm
Forum: Calculating Work of Expansion
Topic: Work Equations
Replies: 2
Views: 338

Work Equations

Hi. I'm kind of confused between ln and log in work equations. When do you know to use w = -nRT ln (vfinal / vinitial) and when to use w = -2.303nRT log (vfinal/ vinitial)? For example, in the book page 310, 8.27. The question says to calculate work for a gas sample with T = 305 K, P= 1.79 atm, and ...
by Taylor_Lam_1E
Sun Feb 12, 2017 6:03 pm
Forum: Balancing Redox Reactions
Topic: Half Reactions
Replies: 2
Views: 275

Half Reactions

Hi, can you guys explain how to figure out the oxidation number in order to find out what is being oxidized and what is being reduced? Thanks!
by Taylor_Lam_1E
Sat Feb 04, 2017 11:16 am
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Calculating Heat [ENDORSED]
Replies: 2
Views: 278

Calculating Heat [ENDORSED]

For question 8.41 in the text book, q1 = mCΔT, but for q2 it was mCΔT + nΔHf. Just wondering what the "nΔHf" added to it is for, and why it was needed for this problem as opposed to others.
by Taylor_Lam_1E
Thu Jan 26, 2017 9:47 pm
Forum: Phase Changes & Related Calculations
Topic: Graphs
Replies: 1
Views: 181

Graphs

Hi. I'm kinda confused with the derivation of entropy, and kinda confused on how to read the graph for it. Like why is entropy the values under the curve? Thanks!
by Taylor_Lam_1E
Sat Jan 21, 2017 8:57 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: Bond Enthalpies [ENDORSED]
Replies: 1
Views: 196

Bond Enthalpies [ENDORSED]

For calculating bond enthalpies, is it always required to draw the lewis dot structure, or is there a more efficient way to solve these problems? Thanks!
by Taylor_Lam_1E
Sat Jan 14, 2017 8:59 pm
Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
Topic: Extensive Property vs. Intensive Property
Replies: 2
Views: 261

Extensive Property vs. Intensive Property

Hey guys, I'm a little confused on how heat capacity is considered an extensive property and how dividing it by an amount makes in an intensive property. Also, why is one more useful than the other? Thanks in advanced!

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