Search found 13 matches
- Fri Mar 17, 2017 1:52 pm
- Forum: Balancing Redox Reactions
- Topic: Negative E
- Replies: 1
- Views: 463
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?
- Fri Mar 17, 2017 10:49 am
- Forum: *Cycloalkenes
- Topic: When to use Z vs. E?
- Replies: 4
- Views: 2014
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.
- Wed Feb 08, 2017 10:06 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3591880
Re: Post All Chemistry Jokes Here
Why do chemistry professors like to teach about ammonia? Because it's basic material!
- Thu Feb 02, 2017 4:28 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3591880
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."
- Wed Jan 25, 2017 10:08 am
- Forum: Administrative Questions and Class Announcements
- Topic: Fall Quarter Finals
- Replies: 2
- Views: 664
Fall Quarter Finals
For students who took 14a with Lavelle last quarter, when/where can we get our finals back?
- Sun Jan 22, 2017 7:18 pm
- Forum: Phase Changes & Related Calculations
- Topic: Derivations
- Replies: 21
- Views: 3473
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!
- Sat Jan 14, 2017 2:27 pm
- Forum: Phase Changes & Related Calculations
- Topic: Negative work values
- Replies: 1
- Views: 566
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?
- Sun Dec 04, 2016 12:00 am
- Forum: Polyprotic Acids & Bases
- Topic: Multiple protons?
- Replies: 3
- Views: 808
Multiple protons?
Could H20 be classified as a polyprotic acid or base because there is more than one H atom?
- Sun Nov 20, 2016 1:35 pm
- Forum: Bronsted Acids & Bases
- Topic: Proton donors
- Replies: 2
- Views: 807
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?
- Sun Oct 30, 2016 8:06 pm
- Forum: Dipole Moments
- Topic: Dipole Moments And Polarity
- Replies: 1
- Views: 1140
Dipole Moments And Polarity
How can you tell if the dipole moments cancel?
- Sun Oct 23, 2016 8:16 pm
- Forum: Lewis Structures
- Topic: Double and Triple Bonds
- Replies: 2
- Views: 739
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?
- Sat Oct 08, 2016 11:04 pm
- Forum: Balancing Chemical Reactions
- Topic: Whole Numbers [ENDORSED]
- Replies: 1
- Views: 557
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.
- Mon Sep 26, 2016 8:23 pm
- Forum: Significant Figures
- Topic: Easy Way to Calculate Sigfigs
- Replies: 6
- Views: 1552
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?