CHEMISTRY COMMUNITY

sophianguyen_1N

Occasionally, the question will tell you whether the reaction is taking place in either acidic or basic solution. If it's acidic, balance using H+. If it's basic, balance using OH- and H2O.

sophianguyen_1N

Yes, you are correct! Double and triple bonds take priority over all substituents.

sophianguyen_1N

Hi! Substituents can be included in parentheses as well.

sophianguyen_1N

Hi! K as an equilibrium constant does not have any units. However, this question asks for k, the rate constant, which does have units. The units are different occasionally depending on the order of the reaction. This is because the rate law's units are always constant, so k units change to accommoda...

sophianguyen_1N

304751905 wrote:for #1, why do we need "iso" in front of propyl? wouldn't the 4- signify the branching?

No, the 4 only denotes which carbon the substituent is attached to. If we did not use iso, the naming of the substituent would be completely different.

sophianguyen_1N

Hi, Does anyone know whether 14CL can be taken at the same time as 14C or whether it is reccommended to be taken after the completion of 14C? Are you currently taking 14B and 14BL together this quarter? I think it is recommended to take 14C and 14CL not concurrently b/c the course material may over...

sophianguyen_1N

Hi! I've heard from people who took the class last year that you can attend the first lecture, after which Professor Hardinger will take student information from those who wish to enroll in his class. I'm not sure if he'll be doing it this year, but it wouldn't hurt to go!

sophianguyen_1N

Yes it is! There are reactions where the values for n or m are two or greater.

sophianguyen_1N

Will a list of the topics covered in each review session be posted here soon?

sophianguyen_1N

You would use the conversion factor 1 L.atm = 101.325 J to convert your value.

sophianguyen_1N

Sublimation is the conversion of a solid directly to a gas. Because enthalpy is a state function, you could also look as this process as a solid becoming a liquid first, and then a gas. The enthalpy value for that process would be the same as the solid substance becoming a gas immediately. Therefore...

sophianguyen_1N

Mathematically, to convert from Celsius to Kelvin, you add 273.15. When you subtract two numbers that both have 273.15 added to them, they effectively cancel out, leaving you with just the final temperature minus the initial temperature but with the units now in Kelvin. Hope that helped a bit!

sophianguyen_1N

The detailed solutions can be found in the solutions manual for the textbook!

sophianguyen_1N

The number of questions will probably be similar to the number on the practice quizzes!

sophianguyen_1N

The electron configuration of Cu+ is actually [Ar] 3d¹⁰. We remove electrons from the 4s orbital before the 3d orbital, because the 4s orbital is actually slightly higher than 3d when filled.

sophianguyen_1N

Normally, it is not necessary as mono is implied if there is no other prefix present.

sophianguyen_1N

I believe atms are the most common unit, but it does vary question to question. Make sure to double check the units, because the constant r also depends on the units given.

sophianguyen_1N

Avogadro's number is involved because the value given is the energy needed to break a mole of C-C bonds. To determine the energy needed to break one bond, you have to divide by Avogadro's number.

sophianguyen_1N

No, I don't think so! I believe we just need to know how to identify the molecular geometry by drawing Lewis dot diagrams.

sophianguyen_1N

These are double bonds, and they are needed to give each carbon atom a full octet of electrons. If you count the number of valence electrons for the molecule and compare with the number of bonds, you'll see that they correspond to each other (2 electrons for each bond). I believe the double bonds ar...

sophianguyen_1N

No, electron configurations will not be on this quiz. They will most likely appear on the next one though!

sophianguyen_1N

Why are chemists so great at solving problems?
Answer: Because they have all the solutions.

sophianguyen_1N

Hey guys! I would also be interested in joining!

CHEMISTRY COMMUNITY

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Re: Balancing with OH- v. H+

Re: priority of double/triple with a halogenated compound

Re: Condensed Structural Formula

Re: Unit of Equilibrium Constant K

Re: Quiz 3 Winter 2017

Re: 14CL

Re: 14C

Re: Reaction order

Re: Midterm Winter 2017

Re: Problem 8.9

Re: physical or phase change

Re: Question on Units of Temperature

Re: More detailed homework key

Re: Practice Quizes

Re: copper anion/cation e configuration

Re: Mono

Re: PV=nRT

Re: from the midterm booklet

Re: Question on Wedge diagram

Re: Why are their two bonds on the circled bonds?

Re: Elecreon Configuration Confusion [ENDORSED]

Re: Post All Chemistry Jokes Here

Re: Rieber Hall 14A Study Group (Fall 2016)