Search found 13 matches

by sarathornburgh1b
Fri Mar 17, 2017 1:52 pm
Forum: Balancing Redox Reactions
Topic: Negative E
Replies: 1
Views: 306

Negative E

How can you tell apart the anode and the cathode when Ecell turns out to be negative? This occurs in 14.31 and other questions, so is there a different way to pick the anode and cathode other than choosing them to have a positive Ecell result?
by sarathornburgh1b
Fri Mar 17, 2017 10:49 am
Forum: *Cycloalkenes
Topic: When to use Z vs. E?
Replies: 4
Views: 1016

When to use Z vs. E?

How do we know when we need to include Z vs. E in a cycloalkene? In some of the posted problem sets it includes them and in some it does not.
by sarathornburgh1b
Wed Feb 08, 2017 10:06 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7756
Views: 1071943

Re: Post All Chemistry Jokes Here

Why do chemistry professors like to teach about ammonia? Because it's basic material!
by sarathornburgh1b
Thu Feb 02, 2017 4:28 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7756
Views: 1071943

Re: Post All Chemistry Jokes Here

A photon checks into a hotel and is asked if he needs any help with his luggage. He says, "No, I'm traveling light."
by sarathornburgh1b
Wed Jan 25, 2017 10:08 am
Forum: Administrative Questions and Class Announcements
Topic: Fall Quarter Finals
Replies: 2
Views: 393

Fall Quarter Finals

For students who took 14a with Lavelle last quarter, when/where can we get our finals back?
by sarathornburgh1b
Sun Jan 22, 2017 7:18 pm
Forum: Phase Changes & Related Calculations
Topic: Derivations
Replies: 21
Views: 2202

Re: Derivations

Kristen, I recommend Khan Academy for calculus review! There are lots of review videos on the khan academy website and their youtube page!
by sarathornburgh1b
Sat Jan 14, 2017 2:27 pm
Forum: Phase Changes & Related Calculations
Topic: Negative work values
Replies: 1
Views: 281

Negative work values

What does it mean when the work done on a system is a negative value? I know that for heat it makes a reaction endothermic or exothermic depending on whether it is positive or negative, does this apply to work as well?
by sarathornburgh1b
Sun Dec 04, 2016 12:00 am
Forum: Polyprotic Acids & Bases
Topic: Multiple protons?
Replies: 1
Views: 428

Multiple protons?

Could H20 be classified as a polyprotic acid or base because there is more than one H atom?
by sarathornburgh1b
Sun Nov 20, 2016 1:35 pm
Forum: Bronsted Acids & Bases
Topic: Proton donors
Replies: 2
Views: 408

Proton donors

When the course reader refers to an acid/base as a proton donor/receiver what does that mean? Would this affect an element's atomic number?
by sarathornburgh1b
Sun Oct 30, 2016 8:06 pm
Forum: Dipole Moments
Topic: Dipole Moments And Polarity
Replies: 1
Views: 586

Dipole Moments And Polarity

How can you tell if the dipole moments cancel?
by sarathornburgh1b
Sun Oct 23, 2016 8:16 pm
Forum: Lewis Structures
Topic: Double and Triple Bonds
Replies: 2
Views: 371

Double and Triple Bonds

How should we know when to use a double or a triple bond in a Lewis Structure? Does it only occur when there are too many electrons?
by sarathornburgh1b
Sat Oct 08, 2016 11:04 pm
Forum: Balancing Chemical Reactions
Topic: Whole Numbers [ENDORSED]
Replies: 1
Views: 313

Whole Numbers [ENDORSED]

Just to clarify, coefficients in front of compounds should be whole numbers correct? So instead of leaving 3.5CO2 we would multiply the whole equation by two to get whole numbers.
by sarathornburgh1b
Mon Sep 26, 2016 8:23 pm
Forum: Significant Figures
Topic: Easy Way to Calculate Sigfigs
Replies: 6
Views: 862

Re: Easy Way to Calculate Sigfigs

If a value has decimals that are zeroes (such as 1500.00), would that be considered having a decimal present or absent?

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