Q: What's the name of the molecule CH2O?
A: Seawater
Search found 20 matches
- Fri Mar 17, 2017 10:56 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891713
- Fri Mar 17, 2017 10:51 pm
- Forum: *Cycloalkenes
- Topic: 2013 FINAL Q6A
- Replies: 4
- Views: 1721
Re: 2013 FINAL Q6A
For this same problem, why is the 1 Carbon identified as being sp2? I thought sp2 meant 3 areas of electron density, but by this reasoning shouldn't carbons 2 and 3 be circled since they both have 3 bonds?
- Fri Mar 17, 2017 10:37 pm
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: 2013 Final Q3C
- Replies: 1
- Views: 500
2013 Final Q3C
For part C of Question #3 how did we calculate the concentration of the H+?
- Fri Mar 17, 2017 10:32 pm
- Forum: Balancing Redox Reactions
- Topic: 2013 Final Q3A
- Replies: 1
- Views: 449
2013 Final Q3A
I'm confused on how we got the E values for each of the half reactions. Will they be given and then we determine which is the anode and which is the cathode, or is there a way to calculate the values?
- Fri Mar 17, 2017 10:22 pm
- Forum: *Alkanes
- Topic: Neo- vs. Tert-
- Replies: 6
- Views: 2112
Neo- vs. Tert-
When naming hydrocarbons, do the prefixes tert- and neo- mean the same thing? I know neo- is (CH3)3C-, but on page 96 of the course reader the part of the structure named tert- resembles the same formula to me. If they are the same, is there a specific time when we should use either?
- Fri Mar 17, 2017 10:17 pm
- Forum: *Cycloalkanes
- Topic: Cycloalkanes
- Replies: 1
- Views: 1267
Cycloalkanes
I know that 5 and 6 Carbon rings are the most common because they are the most stable, but what makes them the most stable in comparison to other cycloalkanes?
- Fri Mar 17, 2017 10:16 pm
- Forum: Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)
- Topic: Concentration Cells
- Replies: 3
- Views: 719
Concentration Cells
In a concentration cell, why do you need the product concentration to be lower than the reactants? Is it because that would favor a forward reaction rather than a reverse reaction?
- Fri Mar 17, 2017 10:13 pm
- Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
- Topic: Electrolysis
- Replies: 5
- Views: 1319
Electrolysis
When it's said that electrolysis uses electron current to drive a non-spontaneous redox reaction, what does this mean? How exactly is the electron current being used to drive it?
- Sun Feb 05, 2017 9:22 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891713
Re: Post All Chemistry Jokes Here
Q: What did the scientist say when he found 2 isotopes of helium?
A: HeHe
A: HeHe
- Sun Jan 22, 2017 10:28 pm
- Forum: Concepts & Calculations Using Second Law of Thermodynamics
- Topic: Boltzmann Equation
- Replies: 1
- Views: 505
Boltzmann Equation
On page 28 of the course reader it says (at least from what I understand) that in the Boltzmann Equation a large error in W means there will be a small error in S. Can someone explain this further please?
- Sun Dec 04, 2016 12:45 am
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: 2015 final Q7A
- Replies: 1
- Views: 581
2015 final Q7A
This question asks to calculate the ratio of bicarbonate to carbonic acid, assuming a pH of 7.4. I understand how we get the concentration of H3O+, but I get lost on how we continue to get the ratio of 20:1. Can someone elaborate on this?
- Sat Dec 03, 2016 10:50 pm
- Forum: Ionic & Covalent Bonds
- Topic: ionic character
- Replies: 2
- Views: 1326
ionic character
How do you determine which compound has bonds with greater ionic character? In the 2015 final Q3E, it asks between CO2 and CS2. I know that the greater the difference in electronegativity = greater ionic character, but isn't there a greater difference in CS2 instead of CO2?
- Sat Dec 03, 2016 7:42 pm
- Forum: Acidity & Basicity Constants and The Conjugate Seesaw
- Topic: Calculating x at equilibrium
- Replies: 2
- Views: 656
Re: Calculating x at equilibrium
I believe that you can assume that x=0 is correct if the value you got for x is less than 5% of the value you were subtracting it from. For example, you would take whatever value you got for x, and then divide it by .0600. If the percentage you get is less than 5%, then you should be fine in assuming.
- Sat Nov 26, 2016 3:45 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891713
Re: Post All Chemistry Jokes Here
What Is the chemical formula for banana?
BaNa2
BaNa2
- Sun Nov 13, 2016 10:24 pm
- Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
- Topic: Sigma & Pi Bonds
- Replies: 1
- Views: 482
Sigma & Pi Bonds
Can someone please explain the reasoning behind why sigma bonds have a lower energy than pi bonds?
- Fri Nov 04, 2016 4:51 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891713
Re: Post All Chemistry Jokes Here
Q: What is "HIJKLMNO"?
A: H2O.
A: H2O.
- Fri Oct 28, 2016 7:49 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891713
Re: Post All Chemistry Jokes Here
How many moles are in a guacamole?
Avocado's number.
Avocado's number.
- Mon Oct 17, 2016 3:47 pm
- Forum: Resonance Structures
- Topic: Resonance and Energy [ENDORSED]
- Replies: 2
- Views: 738
Resonance and Energy [ENDORSED]
Can someone please explain how exactly resonance lowers a molecule's energy/makes it more stable?
- Fri Oct 14, 2016 2:14 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3891713
Re: Post All Chemistry Jokes Here
Q: What do you do with a sick chemist?
A: If you can't helium, and you can't curium, then you might as well barium.
A: If you can't helium, and you can't curium, then you might as well barium.
- Fri Oct 07, 2016 11:33 pm
- Forum: DeBroglie Equation
- Topic: Post Module Question
- Replies: 1
- Views: 610
Post Module Question
If an electron (mass 9.11 x 10^-31 kg) has an associated wavelength of 7.28 x 10^-9m, what is its speed?
I am using the wavelength=h/(mv) equation to find the velocity but I can' t seem to get the right answer. Am i approaching this problem incorrectly?
I am using the wavelength=h/(mv) equation to find the velocity but I can' t seem to get the right answer. Am i approaching this problem incorrectly?