Search found 16 matches

by Cecilia Tsai 3C
Sun Mar 06, 2016 10:14 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8037
Views: 1408453

Re: Chemistry Jokes

to all the Futurama fans out there!!
by Cecilia Tsai 3C
Mon Feb 29, 2016 7:02 pm
Forum: *Alkanes
Topic: Quiz 3 Preparation
Replies: 34
Views: 11506

Re: Quiz 3 Preparation

Is 3-Bromo-1Iodocyclohexane wrong for number five then?
by Cecilia Tsai 3C
Wed Feb 24, 2016 10:18 pm
Forum: *Alkanes
Topic: Substituent question
Replies: 1
Views: 292

Substituent question

If the substituent has the same number, what happens?

I know in the course reader it says "the 1st named group gets lower number" but what does that mean? Can someone provide an example please?
by Cecilia Tsai 3C
Sun Feb 21, 2016 9:47 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8037
Views: 1408453

Re: Chemistry Jokes

Why does hamburger have less energy than steak?

It’s in the ground state.
by Cecilia Tsai 3C
Tue Feb 16, 2016 1:30 pm
Forum: Second Order Reactions
Topic: reaction rate and rate constant
Replies: 1
Views: 303

reaction rate and rate constant

Hi guys,
what's the difference between reaction rate and rate constant, if any?
by Cecilia Tsai 3C
Mon Feb 08, 2016 8:45 am
Forum: Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
Topic: Entropy and multiplicity
Replies: 1
Views: 484

Entropy and multiplicity

When solving for entropy, when do you use (to find W) 2^N and N!/n1!n2! ?

Thanks!
by Cecilia Tsai 3C
Sat Jan 30, 2016 7:55 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 8037
Views: 1408453

Re: Chemistry Jokes

Joke: “What is the difference between thermodynamics and a stick?

Answer: “A stick has two ends and no beginning. Thermodynamics has two ‘beginnings’ (the first and second law) and no end.”
by Cecilia Tsai 3C
Sat Jan 23, 2016 11:50 pm
Forum: Calculating Work of Expansion
Topic: Reversible Reactions question
Replies: 1
Views: 244

Reversible Reactions question

Hi, does a reversible reaction always do more work than an irreversible reaction? If so, why? and if not, then when does an irreversible reaction do more work?
by Cecilia Tsai 3C
Sun Jan 17, 2016 3:03 am
Forum: Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
Topic: Heat Capacity
Replies: 2
Views: 524

Re: Heat Capacity

Hi! As Elizabeth said above, solving for heat capacity is very different since each problem varies upon what details it gives you. To better explain, since I don't want to chop up the words, http://chemwiki.ucdavis.edu/Physical_Chemistry/Thermodynamics/Calorimetry/Heat_Capacity"onclick="window.open(...
by Cecilia Tsai 3C
Sun Jan 10, 2016 4:42 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Question regarding Enthalpy
Replies: 2
Views: 530

Question regarding Enthalpy

Is it true that the delta H value for the forward reaction is negative the delta H value for the reverse reaction?

If so, please explain why this is true.
by Cecilia Tsai 3C
Sun Nov 29, 2015 6:47 pm
Forum: Naming
Topic: Video: Naming Coordination Compounds
Replies: 4
Views: 644

Video: Naming Coordination Compounds

CECILIA TSAI 1C
MEERA RAO 3E
NAMITA RAGHAVAN 4D
by Cecilia Tsai 3C
Mon Nov 02, 2015 10:56 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: When Z greater than or equal to 8 and Z<8 clarification
Replies: 1
Views: 1096

When Z greater than or equal to 8 and Z<8 clarification

Hi all, I'm confused as to what Z is... and how the MO diagram looks when Z is greater than or equal to 8, and Z is less than 8. So my question is, what is Z? If you have a molecule like CO, then what Z would you use to figure out what diagram to use? For z<8, then sigma is above pi and z> or equal ...
by Cecilia Tsai 3C
Wed Oct 28, 2015 10:55 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Confusion between molecular geometry?
Replies: 2
Views: 439

Confusion between molecular geometry?

Hi, I memorized the shapes and its names, however on the review questions for the quiz that were posted, we were asked to name the ESG and MG? What is the difference between the two and will we be expected to know both for the quiz/midterm?

Thanks :)
by Cecilia Tsai 3C
Tue Oct 20, 2015 6:56 pm
Forum: Photoelectric Effect
Topic: Help with Chem Problem!
Replies: 4
Views: 2379

Re: Help with Chem Problem!

she is also in 14a, but with Scerri and we were studying together
by Cecilia Tsai 3C
Tue Oct 20, 2015 6:23 pm
Forum: Photoelectric Effect
Topic: Help with Chem Problem!
Replies: 4
Views: 2379

Help with Chem Problem!

A friend asked me to help her with a chemistry problem, but I'm not sure how to do it.

Which of the following metals requires UV light to exhibit the photoelectric effect?
a) Cs, Work function= 1.95 eV
b) Ag, Work function= 4.74 eV
c) K, Work function= 2.29 eV
d) Y, Work function= 2.90 eV
by Cecilia Tsai 3C
Sun Oct 11, 2015 10:52 pm
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Please help with homework 1.44
Replies: 1
Views: 1680

Please help with homework 1.44

The question in case you were wondering is:
What is the minimum uncertainty in the position of a hydrogen atom in a particle accelerator given that its speed is known to within +/- 5.0 m/s.

Thank you in advanced.

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