Search found 41 matches

by Christian Hardoy 3F
Thu Mar 16, 2017 12:50 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

You R-O-R' get organic chemistry jokes, or you don't.
by Christian Hardoy 3F
Thu Mar 16, 2017 12:47 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What do you call a scientific plant?
A: Chemis-tree
by Christian Hardoy 3F
Thu Mar 16, 2017 12:46 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What do you get when you mix sulfur, tungsten, and silver?
A: SWAg
by Christian Hardoy 3F
Thu Mar 16, 2017 12:38 am
Forum: Work, Gibbs Free Energy, Cell (Redox) Potentials
Topic: Standard Cell Potential
Replies: 4
Views: 431

Re: Standard Cell Potential

The standard cell potential is 0 for this reaction because the standard cell potential of a hydrogen electrode is the standard with which we analyze all other cell potentials. In order to compare cell potentials we need a standard reference point. That standard reference point is that equation's cel...
by Christian Hardoy 3F
Thu Mar 16, 2017 12:35 am
Forum: Interesting Applications: Rechargeable Batteries (Cell Phones, Notebooks, Cars), Fuel Cells (Space Shuttle), Photovoltaic Cells (Solar Panels), Electrolysis, Rust
Topic: Ion-Selective Electrodes/finding pH
Replies: 2
Views: 383

Re: Ion-Selective Electrodes/finding pH

An ion-selective electrode is a sensor that allows one to measure ionic concentrations in aqueous solution. If you've ever seen a pH meter that you stick into a solution in high school chemistry, for example, that would be a common example of an ion-selective electrode. It allows you to measure the ...
by Christian Hardoy 3F
Thu Mar 16, 2017 12:28 am
Forum: *Cycloalkenes
Topic: Phenol groups
Replies: 2
Views: 592

Re: Phenol groups

I am not 100% sure, but the class syllabus, under the category of functional groups, gives a certain list of functional groups, which phenol is not a part of. Check page 7 of the course reader and check the assigned problems for that section to be sure.
by Christian Hardoy 3F
Thu Mar 16, 2017 12:25 am
Forum: Van't Hoff Equation
Topic: Van't Hoff Eq.
Replies: 5
Views: 401

Re: Van't Hoff Eq.

From what I understand, we aren't being given 2 Van't Hoff equations. When the course reader says, "assume delta S naught is constant" and, "assume delta H naught is constant" it is not because there are two equations where one is constant and the other is not. The course reader ...
by Christian Hardoy 3F
Tue Mar 07, 2017 1:10 am
Forum: *Alkanes
Topic: Naming with iso- and neo-
Replies: 8
Views: 862

Re: Naming with iso- and neo-

The prefixes iso- and neo- aren't the paid attention to when alphabetizing, correct? I ask because problem 1.16 in the o-chem homework says that the name for a structure is 2-isopropyl-1,1-dimethylcyclopentane when I got 1,1-dimethyl-2-isopropylcyclopentane. Is the textbooks answer correct because t...
by Christian Hardoy 3F
Thu Mar 02, 2017 11:32 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What happened to the man who was stopped for having sodium chloride and a nine-volt in his car?
A: He was booked for a salt and battery.
by Christian Hardoy 3F
Sun Feb 26, 2017 4:45 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What kind of dogs do chemists have?
A: Laboratory retrievers.
by Christian Hardoy 3F
Sun Feb 26, 2017 4:42 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

You must be made of Uranium and Iodine because all I can see is U and I!
by Christian Hardoy 3F
Fri Feb 24, 2017 9:22 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What did the cowboy chemist say to his horse?
A: HIO Ag!
by Christian Hardoy 3F
Fri Feb 24, 2017 9:20 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Yo mama so ugly not even fluorine would bond with her!
by Christian Hardoy 3F
Mon Feb 20, 2017 12:56 pm
Forum: Administrative Questions and Class Announcements
Topic: Quiz 2 Winter 2017
Replies: 160
Views: 15318

Re: Quiz 2 Winter 2017. Help on Quiz 2 Prep please!

It is important to distinguish between the reaction and the rate constant. The units of rate constant are always M * s^-1. True or False. I think the answer is True, however I'm not sure about this question. Could someone please explain? The rate constant can be M * s^-1 for zero order, s^-1 for fi...
by Christian Hardoy 3F
Thu Feb 16, 2017 11:14 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What is the dullest element?
A: Bohrium
by Christian Hardoy 3F
Thu Feb 16, 2017 11:13 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: If a mole of moles were digging a mole of holes, what would you see?
A: A mole of molasses.
by Christian Hardoy 3F
Fri Feb 10, 2017 9:18 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: Why is Potassium a racist element?
A: Because when you put three of them together, you get KKK.
by Christian Hardoy 3F
Fri Feb 03, 2017 5:18 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: Why can't Werner Heisenberg follow the speed limit?
A: Because he never knows how fast he's going; he only knows where he is.
by Christian Hardoy 3F
Sun Jan 29, 2017 9:13 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What emotional disorder does a gas chomatograph suffer from?
A: Separation anxiety.
by Christian Hardoy 3F
Wed Jan 25, 2017 6:37 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: Delta S and what it favors?
Replies: 2
Views: 566

Re: Delta S and what it favors?

I'm not sure what you mean by "forward processes," but positive delta S means an increase in disorder. If a certain reaction under a certain set of conditions has a positive value of delta S then it means that the reaction represents an increase in disorder and will occur spontaneously. Th...
by Christian Hardoy 3F
Fri Jan 20, 2017 10:13 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What weapon can you make from the elements potassium, nickel, and iron?
A: A KNiFe.
by Christian Hardoy 3F
Fri Jan 13, 2017 11:50 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: If a bear in Alaska and a bear in Yosemite both fall into the water, which one dissolves first?

A: The bear in Alaska because it's polar.
by Christian Hardoy 3F
Wed Nov 30, 2016 7:34 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Hydrates
Replies: 1
Views: 275

Re: Hydrates

No you do not. The only parts counted in the coordination number are the components within the square brackets. For example, in K[FeCl3] . 2H20, K and the 2 H2Os are not counted.
by Christian Hardoy 3F
Wed Nov 30, 2016 7:30 pm
Forum: Conjugate Acids & Bases
Topic: Conjugate bases/acids that change the pH
Replies: 1
Views: 314

Re: Conjugate bases/acids that change the pH

Conjugate bases of weak acids and conjugate acids of weak bases affect the pH, as they tend to pull away protons from H2O or donate protons, respectively.
by Christian Hardoy 3F
Sun Nov 27, 2016 4:33 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What did the cow say to Molybdenum and Oxygen?
A: MoO
by Christian Hardoy 3F
Sun Nov 27, 2016 4:31 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What's a chemist's favorite plant?
A: A stoichiome-tree.
by Christian Hardoy 3F
Sun Nov 27, 2016 4:30 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What kind of fish is made out of two sodium atoms?
A: 2 Na.
by Christian Hardoy 3F
Sun Nov 20, 2016 7:15 pm
Forum: Ideal Gases
Topic: K and Q
Replies: 1
Views: 323

Re: K and Q

Q can be greater than, equal to, or less than K. Q is the reaction quotient and can be calculated at any point during a reaction. It has the same formula as K because it is used to determine if an equation is at equilibrium at a certain point during a reaction. Remember that the "formula" ...
by Christian Hardoy 3F
Tue Nov 15, 2016 10:25 am
Forum: Equilibrium Constants & Calculating Concentrations
Topic: Kp
Replies: 6
Views: 900

Re: Kp

Solids and liquids are not included in Kp or Kc, as they do not affect K at equilibrium.
by Christian Hardoy 3F
Mon Nov 07, 2016 2:54 pm
Forum: Naming
Topic: Naming Coordination Compounds
Replies: 1
Views: 207

Re: Naming Coordination Compounds

In naming coordination compounds how do we determine the transition metal's oxidation state?
by Christian Hardoy 3F
Tue Nov 01, 2016 10:34 am
Forum: Lewis Structures
Topic: Determining Lewis structures
Replies: 4
Views: 520

Re: Determining Lewis structures

The best lewis structure might also be a resonance hybrid structure if the molecule is more stable with delocalized electrons. Therefore, the formal charges could vary depending on the different resonance structures.
by Christian Hardoy 3F
Tue Nov 01, 2016 10:26 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What did the angry electron say when it was repelled?
A: Let me atom!
by Christian Hardoy 3F
Wed Oct 26, 2016 8:43 pm
Forum: Octet Exceptions
Topic: Octet Exception
Replies: 4
Views: 655

Re: Octet Exception

An atom can have more than 8 electrons around it, when bonding, if it has a d orbital, e.g. when n>=3. When forming bonds electrons are normally added to the valence shell of an atom until it reaches its octet. However, with elements that have d orbitals, there can be more than 8 because after it fi...
by Christian Hardoy 3F
Thu Oct 20, 2016 9:22 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What do you call a joke that is based on cobalt, radon, and yttrium?
A: CoRnY.
by Christian Hardoy 3F
Thu Oct 20, 2016 9:20 pm
Forum: Formal Charge and Oxidation Numbers
Topic: Formal Charge of 0 [ENDORSED]
Replies: 3
Views: 686

Re: Formal Charge of 0 [ENDORSED]

The formula for formal charge is FC = # of valence electrons in free atom - (# of lone pair electrons + (bonding electrons/2)), or FC = V - (L + S/2) with variables. So if the formal charge is zero, it means that the number of lone pair electrons plus the number of bonding electrons divided by to (o...
by Christian Hardoy 3F
Fri Oct 14, 2016 3:45 pm
Forum: Lewis Structures
Topic: Lewis Structure Example on page 79 of Course Reader
Replies: 1
Views: 271

Re: Lewis Structure Example on page 79 of Course Reader

That 4 that you see on page 79 isn't part of the Lewis structures that are depicted there. If you look at the same spot on each page in each section there is a number indicating what page number you are on in the section. The number at the bottom right is the page number in the course reader and the...
by Christian Hardoy 3F
Fri Oct 14, 2016 3:41 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018630

Re: Post All Chemistry Jokes Here

Q: What did the bartender say when oxygen, hydrogen, sulfur, sodium, and phosphorous walked into his bar?
A: OH SNaP!
by Christian Hardoy 3F
Fri Oct 07, 2016 12:40 am
Forum: Photoelectric Effect
Topic: Photoelectric Effect [ENDORSED]
Replies: 12
Views: 1444

Re: Photoelectric Effect [ENDORSED]

Hi! On page 47 of the Course Reader, it says that as n approaches infinity, E approaches 0, and that (negative means bound e- has lower energy than free e-). Can someone explain what "negative means bound e- has lower energy than free e-" means? What is a bound electron versus a free elec...
by Christian Hardoy 3F
Thu Sep 29, 2016 11:10 am
Forum: Photoelectric Effect
Topic: Photoelectric Effect [ENDORSED]
Replies: 12
Views: 1444

Re: Photoelectric Effect [ENDORSED]

The threshold energy when talking about the photoelectric effect is the energy required to remove an electron from an atom of a particular metal. The value of each threshold energy is unique to each metal. The values are determined experimentally I would guess. You might be asked to find the thresho...
by Christian Hardoy 3F
Wed Sep 28, 2016 3:03 pm
Forum: Photoelectric Effect
Topic: Photoelectric Effect [ENDORSED]
Replies: 12
Views: 1444

Re: Photoelectric Effect [ENDORSED]

Larger wavelengths do "have photons." A larger wavelength of light may not eject an electron for a particular type of metal because the energy of the incident light, a.k.a the photons hitting the metal, depends on the frequency according to the equation E = hv, where E is the energy of the...

Go to advanced search