Search found 39 matches
- Fri Mar 16, 2018 6:56 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
What do you call a tooth in a glass of water? A one molar solution.
- Fri Mar 16, 2018 6:55 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
Old chemists never die, they just stop reacting
- Sun Mar 11, 2018 10:36 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
Did you know that oxygen went for a second date with potassium?
How did it go?
It went OK2!
How did it go?
It went OK2!
- Sun Mar 11, 2018 10:35 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
You must be the acid to my litmus paper because every time I meet you I turn bright red.
- Sun Mar 11, 2018 10:33 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
Are you made of copper and tellurium? Because you're CuTe.
- Tue Feb 27, 2018 12:19 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
Did You Know Protons Have Mass?
I didn't even know they were Catholic!
I didn't even know they were Catholic!
- Tue Feb 27, 2018 12:18 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
Why Does Hamburger Yield Lower Energy Than Steak?
Because it's in the ground state.
Because it's in the ground state.
- Tue Feb 27, 2018 12:18 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
You Must Be A Compound Of Barium and Beryllium
Because you're a total BaBe
Because you're a total BaBe
- Sun Feb 18, 2018 11:50 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell Diagrams
- Replies: 2
- Views: 326
Re: Cell Diagrams
Thank you!!
- Sun Feb 18, 2018 12:26 am
- Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
- Topic: Cell Diagrams
- Replies: 2
- Views: 326
Cell Diagrams
When writing cell diagrams based on balanced equations how do we know when to add Pt(s) onto each end of the reaction? For example, see 13b from chapter 14. (b) Ce4+(aq) + I-(aq) --> I2(s) + Ce3+(aq) the solutions say that the cell diagram is Pt (s) | I-(aq) | I2(s) || Ce4+(aq) | Ce3+(aq) | Pt(...
- Wed Feb 14, 2018 1:34 pm
- Forum: Gibbs Free Energy Concepts and Calculations
- Topic: Effect of solids and liquids on K
- Replies: 3
- Views: 453
Effect of solids and liquids on K
We don't use the molarity of solids and liquids when determining the equilibrium constant of a reaction, right?
Only aqueous solutions?
Only aqueous solutions?
- Sun Feb 11, 2018 9:49 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
All the good chemistry jokes ARGON
- Sun Feb 11, 2018 9:45 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
All the good chemistry jokes ARGON
- Sun Feb 11, 2018 3:25 pm
- Forum: Entropy Changes Due to Changes in Volume and Temperature
- Topic: 9.43
- Replies: 1
- Views: 382
9.43
for #43 (9.43 Suppose that 50.0 g of H2O(l) at 20.0 C is mixed with 65.0 g of H2O(l) at 50.0 C at constant atmospheric pressure in a thermally insulated vessel. Calculate S and Stot for the process.), why wouldn't we use deltaS = nCpln(Tf/Ti) ? How do we find the individual deltaS(hot) and delta...
- Mon Jan 22, 2018 10:21 pm
- Forum: Phase Changes & Related Calculations
- Topic: Heating Capacity from Heating Curve
- Replies: 2
- Views: 332
Re: Heating Capacity from Heating Curve
A steeper slope on a heating curve is indicative of a greater temperature change over a lesser energy expenditure. Heat capacity relates to the amount of energy required to increase the temperature by 1 degree Celsius. A lower heat capacity will correlate to a steeper slope because it the temperatur...
- Mon Jan 22, 2018 12:10 pm
- Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
- Topic: 7.71 [ENDORSED]
- Replies: 5
- Views: 5162
Re: 7.71 [ENDORSED]
Why is it that we must create an "equation where the sum of the [heat of formation of the products] minus the sum of the [heat of formation of the reactants] equals -338.4kJ"?
Why wouldn't the answer be -338.4kJ?
Why wouldn't the answer be -338.4kJ?
- Wed Jan 10, 2018 10:05 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
Q: What do you do with a dead chemists?
A: Barium
A: Barium
- Wed Jan 10, 2018 10:01 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
I had to make these bad chemistry jokes because all the good ones Argon.
- Wed Jan 10, 2018 10:00 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
Q: Anyone know any jokes about sodium?
A: Na
A: Na
- Sat Dec 09, 2017 8:42 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
The name's Bond. Ionic Bond. Taken, not shared.
- Sat Dec 09, 2017 8:41 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: 12.55
- Replies: 1
- Views: 445
12.55
My answer has been off multiple times when trying to complete 12.55. I'm not sure if it is just because I am plugging into the quadratic formula incorrectly. Please elaborate on how you completed this problem. Calculate the pH, pOH, and percentage deprotonation of each of the following aqueous solut...
- Sat Dec 09, 2017 8:37 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
Q: What do chemists call a benzene ring with iron atoms replacing the carbon atoms? A: A ferrous wheel.
- Thu Nov 30, 2017 10:34 am
- Forum: Student Social/Study Group
- Topic: Is it me?
- Replies: 3
- Views: 637
Re: Is it me?
Haha. Yeah, the class definitely started moving a lot faster. I didn't take AP Chem, but I've just been going to a lot of office hours. How did you all think the last test went?
- Thu Nov 30, 2017 10:24 am
- Forum: Naming
- Topic: Trans & Cis Naming
- Replies: 3
- Views: 361
Trans & Cis Naming
We can't add trans or cis when naming ligands unless the lewis structure is provided for us, right?
- Mon Nov 27, 2017 11:40 pm
- Forum: Naming
- Topic: Naming Coordination Compounds
- Replies: 8
- Views: 816
Re: Naming Coordination Compounds
If the overall compound is neutral, is it still just the elemental name?
- Mon Nov 27, 2017 11:38 pm
- Forum: Shape, Structure, Coordination Number, Ligands
- Topic: Coordination Number
- Replies: 1
- Views: 229
Coordination Number
Is coordination number related to the number of bonding regions or the number of bonds? (My notes from class said number of bonds, but I was unsure of this.)
Thanks!
Thanks!
- Mon Nov 27, 2017 11:33 pm
- Forum: Naming
- Topic: Di, Tri, Tetra vs. Bis, Tris, Tetrakis
- Replies: 1
- Views: 2599
Di, Tri, Tetra vs. Bis, Tris, Tetrakis
I'm still a bit unsure of when to use di, tri, tetra vs. bis, tris, tetrakis.
I believe the latter is used in polydentates, but are the prefixes only used on the later ligand names or all of them?
Thanks!
I believe the latter is used in polydentates, but are the prefixes only used on the later ligand names or all of them?
Thanks!
- Mon Nov 27, 2017 11:29 pm
- Forum: Naming
- Topic: Naming Coordination Compounds
- Replies: 8
- Views: 816
Naming Coordination Compounds
Within coordination compounds, when is "-ate" added to the central ion? When is the central ion just named as its elemental name?
Ex: cobalt vs. cobaltate
or platinum vs. platinate
Ex: cobalt vs. cobaltate
or platinum vs. platinate
- Mon Nov 27, 2017 11:24 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
If you're not part of the solution, you're part of the precipitate.
- Mon Nov 27, 2017 11:23 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
Did you hear oxygen went on a date with potassium? A: It went OK.
- Thu Nov 16, 2017 12:27 pm
- Forum: Hybridization
- Topic: Hybridization vs. Standard Electron Configuration
- Replies: 1
- Views: 318
Hybridization vs. Standard Electron Configuration
Under what circumstances specifically will an atom be hybridized rather than having a standard electron configuration? I understand the case of Carbon needing more than 2 valence electrons (available for bonding), but in every other case, why are atoms hybridized? Does anyone have a rule or trick fo...
- Thu Nov 16, 2017 12:22 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
How does Iron Man freshen up his apartment?
With some Fe-breeze
With some Fe-breeze
- Thu Nov 16, 2017 12:19 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642546
Re: Post All Chemistry Jokes Here
Why did the noble gas cry?
Because all his friends Argon :(
Because all his friends Argon :(
- Wed Nov 08, 2017 11:23 pm
- Forum: Student Social/Study Group
- Topic: Chemistry Joke :)
- Replies: 2
- Views: 953
Re: Chemistry Joke :)
Good fun.
If the Silver Surfer and Iron Man team up, they’d be alloys
If the Silver Surfer and Iron Man team up, they’d be alloys
- Wed Nov 08, 2017 4:38 pm
- Forum: Lewis Structures
- Topic: Central Atom? [ENDORSED]
- Replies: 7
- Views: 2788
Central Atom? [ENDORSED]
Why is it that the atom with the lowest ionization energy is always the central atom of a Lewis Structure?
- Tue Oct 31, 2017 1:10 am
- Forum: Trends in The Periodic Table
- Topic: 2.81 – Oxygen Anomaly
- Replies: 2
- Views: 505
2.81 – Oxygen Anomaly
The question states: Ionization energies usually increase on going from left to right across the periodic table. The ionization energy for oxygen, however, is lower than that of either nitrogen or fluorine. Explain this anomaly. I understand why oxygen has a lower ionization energy than fluorine, bu...
- Mon Oct 30, 2017 12:12 am
- Forum: Quantum Numbers and The H-Atom
- Topic: Unpaired electrons (Homework 2.51) [ENDORSED]
- Replies: 3
- Views: 3283
Unpaired electrons (Homework 2.51) [ENDORSED]
Would elements in the 5d group have 9 electrons instead of 10?
For instance, homework problem 2.51 asks how many unpaired electrons reside in the predicted ground state electron configuration for Tantalium.
Would the answer to this be 2 unpaired electrons or 3 unpaired electrons?
For instance, homework problem 2.51 asks how many unpaired electrons reside in the predicted ground state electron configuration for Tantalium.
Would the answer to this be 2 unpaired electrons or 3 unpaired electrons?
- Thu Oct 19, 2017 12:31 pm
- Forum: Photoelectric Effect
- Topic: Finding the number of photons
- Replies: 2
- Views: 3019
Re: Finding the number of photons
In 1.0 s, a 60 W bulb emits 11 J of energy in the form of infrared radiation (heat) of wavelength 1850 nm. What is the energy per photon of light emitted? How many photons of infrared radiation does the lamp generate in 1.0 s? How do you find the number of photons generated? Well in order to find th...
- Thu Oct 19, 2017 12:19 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Question about the Negative Sign in En = -hR/n^2
- Replies: 5
- Views: 669
Re: Question about the Negative Sign in En = -hR/n^2
Yes, we would not express frequency or wavelength in terms of a negative number. However, when discussing change in energy, your value would be negative because energy is being released. Your final energy is less than your initial energy level.