CHEMISTRY COMMUNITY

Helen_Lee_1L

A photon checks into a hotel and is asked if he needs any help with his luggage. He says, "No, I'm traveling light."

Helen_Lee_1L

Person 1: Hey, what was on the organic chemistry test?
Person 2: There were alkynes of problems.

Helen_Lee_1L

Why can't ammonia get any girlfriends?

Because he's so basic.

Helen_Lee_1L

In an adiabatic expansion, the volume goes from 1 Liters to 2.56 Liters at an external pressure of 1 atm. It releases 73J of heat at 1 atm, and returns to its original delta U. Find final volume. So I understand that in an adiabatic expansion q=0, and so delta U equals work. Therefore, work (w) equa...

Helen_Lee_1L

Are there other examples of isolated systems other than bomb calorimeters?

Helen_Lee_1L

In the course reader, it says that work (w) and heat (q) depend on the path taken, and therefore are not state properties. So, my question is, what does it mean to be path dependent?

Helen_Lee_1L

Why are all molecules that have a carboxyl group (COOH) weak acids?

Helen_Lee_1L

For people who have a general knowledge of mainstream music:
What is David Guetta's favorite element?
Titanium

Helen_Lee_1L

In the course reader, it says that "molar concentration of a pure substance (solid or liquid) does not change in a reaction." However, during lecture, Professor Lavelle mentioned that solids do not show up in equilibrium reactions. Can anyone explain to me why this rule exists? Thank you!

Helen_Lee_1L

So I know that if the electronegativity difference > 2, then it's considered an ionic bond. And that if the electronegativity difference <1.5, then it's considered a covalent bond. What if the electronegativity difference is between the intervals of 1.5 and 2? How do you determine if the heteronucle...

Helen_Lee_1L

Thank you so much! :) Makes so much more sense now!

Helen_Lee_1L

L.3 Compounds that can be used to store hydrogen in vehicles are being actively sought. One reaction being studied for hydrogen storage is Li3N + 2 H2 ---> LiNH2 + 2 LiH. (a) What amount (in moles) of H2 is needed to react with 1.5 mg of Li3N? (b) Calculate the mass of Li3N that will produce 0.650 m...

CHEMISTRY COMMUNITY

Search found 12 matches

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Adiabatic Expansion Question

Isolated Systems [ENDORSED]

Path dependent property

Bronsted Acids Clarification

Re: Post All Chemistry Jokes Here

Solids in Equilibrium Reactions

Difference in Electronegativity [ENDORSED]

Re: Reaction Stochiometry L.3 [ENDORSED]

Reaction Stochiometry L.3 [ENDORSED]