CHEMISTRY COMMUNITY

Aditya Mamtora 2C

How does an electron sounds when it falls on the ground?

Planck!

Aditya Mamtora 2C

If you’re not part of the solution, you’re part of the precipitate!

Aditya Mamtora 2C

H2O is the formula for water, what is the formula for ice? — H2O cubed

Aditya Mamtora 2C

I would label them as functional groups just in case so we don't lose points unnecessarily.

Aditya Mamtora 2C

Dear Dr. Lavelle,

Thanks for being the backbone of all pre-med students at UCLA, your enthusiasm and passion for teaching really made chemistry one of the best classes I have ever taken.

Regards,
Aditya Mamtora

Aditya Mamtora 2C

The larger substituent group among all the substituents prefers to be in the equatorial position.

Aditya Mamtora 2C

When naming alkenes with multiple double bonds, suppose a hexene with 2 double bonds, do we end the molecule name with hexa diene or just hexdiene?

Aditya Mamtora 2C

ChristineCastanon_1B wrote:Could anybody briefly explain how you did number 11?

We do not need to know how do do #11 for Quiz #2

Aditya Mamtora 2C

Why is it that during a phase change, the temperature can still remain the same if heat is still being added?

Aditya Mamtora 2C

If the Silver Surfer and Iron Man team up, they'd be alloys.

Aditya Mamtora 2C

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

Aditya Mamtora 2C

Two chemists go into a bar. The first one says "I think I'll have an H2O." The second one says "I think I'll have an H2O too" — and he died.

Aditya Mamtora 2C

Based on information from my TA there will be no derivations on the quiz.

Aditya Mamtora 2C

Yeah you can because the stronger the bond the more the dissociation energy and we can find relative bond strength through molecular orbital theory through Bond order (1/2(bonding + anti bonding))

Aditya Mamtora 2C

Since we are measuring pH the correct number of sig figs is the number of decimal places used when finding pH, which is 2 decimal places because 14.00 has digits that go up to 2 past the point.

Aditya Mamtora 2C

I'm pretty sure we have to memorize the list of weak acids and bases/strong acids and bases for the final.

Aditya Mamtora 2C

You can't write it as [Kr] because there are many ions that are isoelectronic with [Kr] so just using [Kr] would be too unspecific. Writing in in the expanded form allows us to know for sure that the ion we are talking about is Br-

Aditya Mamtora 2C

We just have to say less than 109.5 because VSEPR only allows us to know qualitatively the bond angles. It is less than 109.5 because the two lone pairs above the oxygen force down the bonds making the two bonds closer to each other.

Aditya Mamtora 2C

You actually can figure out all the bonds after just drawing the lewis structure but if you automatically draw it in the shape you need then it is even easier. Once you have the bonds (single, double, triple) represented in the lewis structure you can just use those to determine how many sigma and p...

Aditya Mamtora 2C

We want the formal charge to equal zero because that means the charges are evenly distributed throughout the molecule putting it in its most stable state. To get the overall formal charge of the molecule we have to calculate the individual formal charges of each atom [FC= V+(L+S/2)] and add them tog...

Aditya Mamtora 2C

I'm a bit confused, what is the order we need to draw our electron dots in for the lewis structure or does it not matter as long as we stick to one pattern the whole time?

Aditya Mamtora 2C

1.25 Sodium vapor lamps, used for public lighting, emit yellow light of wavelength 589 nm. How much energy is emitted by (a) an excited sodium atom when it generates a photon; (b) 5.00 mg of sodium atoms emitting light at this wavelength; (c) 1.00 mol of sodium atoms emitting light at this wavelengt...

Aditya Mamtora 2C

To maintain the most accurate results, we should only round off our sig figs at the end of the problem.

Aditya Mamtora 2C

When I was in my discussion, my TA told us that the best way to use sig figs in your final answer is to keep as many sig figs as the least amount given during the problem.

Aditya Mamtora 2C

Hey guys, I'm in Cedar. If we can get the DeNeve group going that'd be a huge help.

CHEMISTRY COMMUNITY

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Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Are alkenes and alkynes considered functional groups?

Re: Saying Thank You to Dr. Lavelle

Re: Cyclohexane Chair Conformation with Substituents

Naming of Alkenes

Re: Quiz 2 Winter 2017

Phase Changes

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Entropy and Temperature

Re: Dissociation energy and Molecular orbital energy level diagram

Re: What is the correct number of significant figures for 13.27(b)?

Re: 2007 Final Q5

Re: Problem with 2C on 2014 Final

Re: Bond Angle

Re: Process of determining bond types

Re: Wanted Formal Charge

Drawing a Lewis Structure

Question 1.25 on the HW

Re: When to Apply Sig Figs [ENDORSED]

Re: Sig Figs. Problem

Re: De Neve Study Group