Search found 24 matches

by melissasandoval2O
Thu Mar 16, 2017 9:14 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 918915

Re: Post All Chemistry Jokes Here

Studying for Dr. Lavelle's chemistry final? More like stuDYING for the chemistry final.
by melissasandoval2O
Thu Mar 16, 2017 3:56 am
Forum: *Alkenes
Topic: Alkenes and Functional Groups
Replies: 4
Views: 651

Alkenes and Functional Groups

Hello mates!
I had a question regarding if functional groups can affect whether the mom carbon chain will be alkane or alkene. Lets say we have a aldehyde connected to a pentane, will the double bond within the aldehyde change the pentane to pentene or would it still be pentane?
Thank you so much!
by melissasandoval2O
Thu Mar 09, 2017 2:55 am
Forum: *Free Energy of Activation vs Activation Energy
Topic: HW #4.40
Replies: 2
Views: 711

HW #4.40

Hey buds!
The question states "The activation energy in organic reaction is known to be 125 kj/mol. Will this reaction occur at room temperature?" the answer is no but I was wondering how do we come to that solution?
Is it something we memorize or can this be worked out?
Thanks in advance!
by melissasandoval2O
Sat Mar 04, 2017 3:14 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 918915

Re: Post All Chemistry Jokes Here

Whats a frat boy's favorite element? BROmine
Whats a frat boy's favorite organic substituent? BROmo
by melissasandoval2O
Fri Mar 03, 2017 11:28 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 918915

Re: Post All Chemistry Jokes Here

Organic chemistry is difficult. Those who study it have alkynes of trouble.
by melissasandoval2O
Thu Feb 23, 2017 1:14 am
Forum: *Enzyme Kinetics
Topic: Quiz #9
Replies: 2
Views: 377

Re: Quiz #9

^^^^ That is such an amazing explanation! Thank you so so sooooo much!!!!
by melissasandoval2O
Wed Feb 22, 2017 4:14 am
Forum: *Enzyme Kinetics
Topic: Quiz #9
Replies: 2
Views: 377

Quiz #9

Hello ya'll!
Can someone please explain to me how number 9 is done? Since Dr. Lavelle stated we should know how to do this one, I'm hoping someone can show me!
Thanks!
by melissasandoval2O
Thu Feb 16, 2017 8:57 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 918915

Re: Post All Chemistry Jokes Here

When people unknowably become subshells
by melissasandoval2O
Sat Feb 11, 2017 2:48 pm
Forum: Balancing Redox Reactions
Topic: Coefficients
Replies: 1
Views: 178

Coefficients

Hello! I was recently doing some practice work in the textbook and when they balanced the equation there was a fraction coefficient. I was always taught that you don't want a fraction as the coefficient so you usually multiple the entire equation by two. When I finished the problem and checked the a...
by melissasandoval2O
Sun Feb 05, 2017 8:54 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 918915

Re: Post All Chemistry Jokes Here

Got mole problems? Call Avogadro at 602-1023
by melissasandoval2O
Sun Jan 29, 2017 3:46 pm
Forum: Administrative Questions and Class Announcements
Topic: Proving equations
Replies: 2
Views: 317

Proving equations

Good Afternoon!
I was just wondering if we are excepted to know how to derive the equations from their parents functions for the quiz this week? Or should we just know how the overall outcome equation?
Thanks a lot!!
by melissasandoval2O
Sun Jan 22, 2017 4:27 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 918915

Re: Post All Chemistry Jokes Here

Why is a hot bracelet more valuable than a cold bracelet? Because it has more joules.
by melissasandoval2O
Mon Jan 16, 2017 10:03 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Methods
Replies: 1
Views: 182

Methods

Hello! When you're finding enthaply, is there a "common one" to use out of the 3 methods? Are we expected to use one method over the other on tests and quizzes?
by melissasandoval2O
Sat Dec 03, 2016 2:40 pm
Forum: Dipole Moments
Topic: How to determine polarity
Replies: 1
Views: 390

How to determine polarity

Hello everyone!
Can someone explain to me how to correctly determine polarity?
I understand it has to do with the pull of the dipole but I have trouble understanding which way it pulls.
Thanks!
by melissasandoval2O
Sun Nov 27, 2016 5:56 pm
Forum: Lewis Acids & Bases
Topic: Strong/Weak Acid/Base
Replies: 3
Views: 738

Strong/Weak Acid/Base

Is there a certain way we can determine if a acid is a strong or weak base along with its conjugate base/acid?
Or is it merely a memorization thing with the chart of strong/weak acids and bases?
by melissasandoval2O
Sat Nov 19, 2016 3:11 pm
Forum: Acidity & Basicity Constants and The Conjugate Seesaw
Topic: Which is weaker/stronger?
Replies: 2
Views: 312

Which is weaker/stronger?

Hello everyone!! During lecture on Friday, Dr. Lavelle went over how you can tell which is a stronger acid or base. And I was a little confused because I thought if the Ka value is higher, that would make it stronger. But he went over examples where the higher number meant it was the weaker one? Can...
by melissasandoval2O
Sat Nov 12, 2016 6:00 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Which model to use?
Replies: 1
Views: 273

Which model to use?

Hey ya'll!
I had a question about how to determine which molecular model to use when it has two elements together, like if I should the z≥8 or z<8.
What would use to determine which one is correct?
by melissasandoval2O
Thu Nov 03, 2016 11:50 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 918915

Re: Post All Chemistry Jokes Here

me, drinking water: this water is so iconic
I would tell another chemistry joke, but all of my good ones argon
by melissasandoval2O
Tue Oct 25, 2016 3:25 pm
Forum: Lewis Structures
Topic: Acids and Bases
Replies: 1
Views: 294

Acids and Bases

Hello everyone!
I had a question about Acids and Bases, I was confused as too how we would be able to tell an acid and base based off a Lewis Structure. Can someone please explain how you're able to tell them apart?
Thanks! Hope everyone does well on their quizzes this week!
Melissa
by melissasandoval2O
Wed Oct 19, 2016 11:41 pm
Forum: Lewis Structures
Topic: Octet Rule Exceptions? [ENDORSED]
Replies: 3
Views: 444

Octet Rule Exceptions? [ENDORSED]

Hello again everyone! Hope midterms are going well! I had a question about octet exceptions, or something of the sort. I understand Boron can be flexible with octet due to coordinate covalent bonds and all, but I remember Dr. Lavelle stating something about Phosphorus and Sulfur, that they can also ...
by melissasandoval2O
Sat Oct 15, 2016 1:31 pm
Forum: Electron Configurations for Multi-Electron Atoms
Topic: Hund's Rule and Pauli's Principle
Replies: 1
Views: 495

Hund's Rule and Pauli's Principle

Hello my fellow chemistry people!
I'm having a really hard time trying to figure out how Hund's Rule ad Pauli's Principle are applied when you are trying to figure out an atom's configuration and how they affect your overall outcome.
Thanks a lot!
Melissa
by melissasandoval2O
Fri Oct 07, 2016 12:11 pm
Forum: Administrative Questions and Class Announcements
Topic: Quizes
Replies: 21
Views: 1330

Re: Quizes

@Zara, honestly any non-graphicg calculator will be good to use, I personally use a the texas instruments TI-30XS and I love it, it was like 20 bucks but i know some simple scientific calculators that go for 10 bucks.
by melissasandoval2O
Fri Oct 07, 2016 12:09 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Changing signs [ENDORSED]
Replies: 2
Views: 319

Changing signs [ENDORSED]

Hello my fellow chemistry peeps! I understand that the Heisenberg equation uses the greater than or equal symbol, so when the question is asking for the "minimum" of something, is this when we would change the symbol from greater than or equal to, to simply "=" ? And just to clar...
by melissasandoval2O
Sat Oct 01, 2016 9:09 pm
Forum: Photoelectric Effect
Topic: Quick question on kinetic energy [ENDORSED]
Replies: 1
Views: 331

Quick question on kinetic energy [ENDORSED]

So I was looking at the lecture notes and I understand E(photon) = threshold energy + E(excess). So if the energy required to remove the electron is equal to the energy of the photon, where does that leave the kinetic energy, is it equal to zero?

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