CHEMISTRY COMMUNITY

giareyes_2B

Q: What's the name of the molecule CH2O?
A: Seawater

giareyes_2B

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?

giareyes_2B

For part C of Question #3 how did we calculate the concentration of the H+?

giareyes_2B

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?

giareyes_2B

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?

giareyes_2B

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?

giareyes_2B

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?

giareyes_2B

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?

giareyes_2B

Q: What did the scientist say when he found 2 isotopes of helium?
A: HeHe

giareyes_2B

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?

giareyes_2B

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?

giareyes_2B

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?

giareyes_2B

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.

giareyes_2B

What Is the chemical formula for banana?

BaNa2

giareyes_2B

Can someone please explain the reasoning behind why sigma bonds have a lower energy than pi bonds?

giareyes_2B

Q: What is "HIJKLMNO"?

A: H2O.

giareyes_2B

How many moles are in a guacamole?

Avocado's number.

giareyes_2B

Can someone please explain how exactly resonance lowers a molecule's energy/makes it more stable?

giareyes_2B

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.

giareyes_2B

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?

CHEMISTRY COMMUNITY

Search found 20 matches

Re: Post All Chemistry Jokes Here

Re: 2013 FINAL Q6A

2013 Final Q3C

2013 Final Q3A

Neo- vs. Tert-

Cycloalkanes

Concentration Cells

Electrolysis

Re: Post All Chemistry Jokes Here

Boltzmann Equation

2015 final Q7A

ionic character

Re: Calculating x at equilibrium

Re: Post All Chemistry Jokes Here

Sigma & Pi Bonds

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Resonance and Energy [ENDORSED]

Re: Post All Chemistry Jokes Here

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