Search found 18 matches
- Wed Mar 15, 2017 2:36 am
- Forum: Administrative Questions and Class Announcements
- Topic: Saying Thank You to Dr. Lavelle
- Replies: 490
- Views: 567490
Re: Saying Thank You to Dr. Lavelle
From 14A to 14B, thanks for everything
- Mon Mar 13, 2017 5:26 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642904
Re: Post All Chemistry Jokes Here
What is the chemical formula for "Banana"?
BaNa2
BaNa2
- Sun Mar 05, 2017 10:30 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642904
Re: Post All Chemistry Jokes Here
What was NaCl charged with when he was arrested?
A salt
A salt
- Sun Mar 05, 2017 10:27 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642904
Re: Post All Chemistry Jokes Here
A photon checks into a hotel and is asked if he needs any help with his luggage. He says, "No, I'm traveling light."
- Sun Mar 05, 2017 10:15 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642904
Re: Post All Chemistry Jokes Here
Q: Why did the acid go to the gym?
A: To become a buffer solution.
A: To become a buffer solution.
- Sun Mar 05, 2017 10:11 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642904
Re: Post All Chemistry Jokes Here
What do you call iron blowing in the wind?
Fe-breeze
Fe-breeze
- Sun Mar 05, 2017 10:08 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642904
Re: Post All Chemistry Jokes Here
Q: If H20 is water, what is H204?
A: Drinking, bathing, washing, swimming, etc.
A: Drinking, bathing, washing, swimming, etc.
- Fri Feb 10, 2017 1:13 am
- Forum: Heat Capacities, Calorimeters & Calorimetry Calculations
- Topic: Question on q=nC(change in)T
- Replies: 2
- Views: 879
Re: Question on q=nC(change in)T
In this case, the Delta T would be the same regardless of whether it is Kelvin or Celsius. For example, going from 0°C to 25°C is equivalent to going from 273 Kelvin to 298 Kelvin. In both cases, (25°C - 0°C) and (298 K - 273 K), The delta T is still 25. In theory, the Delta T units are supposed to ...
- Mon Jan 23, 2017 8:50 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642904
Re: Post All Chemistry Jokes Here
What animal is made up of calcium, nickel and neon?
A CaNiNe
A CaNiNe
- Wed Jan 18, 2017 8:55 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642904
Re: Post All Chemistry Jokes Here
What do you get when 6.02x1023 mosquitoes bite you?
Molearia
Molearia
- Wed Jan 18, 2017 8:53 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3642904
Re: Post All Chemistry Jokes Here
What kind of fish is made up of two sodium atoms?
2Na
2Na
- Fri Dec 02, 2016 1:51 pm
- Forum: General Science Questions
- Topic: Response of Equilibria to change
- Replies: 1
- Views: 678
Re: Response of Equilibria to change
If you increase the pressure, the equilibrium will shift to the right, yielding more ammonia. This is because increasing pressure, decreases the volume, and thus favors the formation of the least gas molecules. There are 4 gas molecules on the left and 2 gas molecules on the right. Therefore, it wil...
- Mon Nov 14, 2016 8:14 pm
- Forum: Equilibrium Constants & Calculating Concentrations
- Topic: Upcoming Quiz #3
- Replies: 7
- Views: 1227
Re: Upcoming Quiz #3
Yes, the 3rd quiz will cover molecular orbital theory, coordination compounds, and equilibrium up to p. 135
- Fri Oct 28, 2016 1:34 am
- Forum: Dipole Moments
- Topic: Dipole Moment in a Lewis Structure
- Replies: 5
- Views: 2165
Re: Dipole Moment in a Lewis Structure
The delta negative pole is the atom that is higher in electronegativity. The delta positive pole is the atom that is lower in electronegativity. For example in H 2 O, oxygen is more electronegative than hydrogen, so oxygen would be delta negative. The 2 hydrogens have a lower electronegativity, so t...
- Fri Oct 28, 2016 1:29 am
- Forum: Hybridization
- Topic: Question About Methane Structure and Carbon Bonding
- Replies: 2
- Views: 1474
Re: Question About Methane Structure and Carbon Bonding
When it says Carbon has 2 unpaired electrons, is referring to the fact that Carbon has an electron configuration of [He]2s 2 2p 2 . Therefore Carbon has 2 unpaired electrons in the p sublevel. To be able to form 4 bonds, Carbon forms a mixture of its valence electron orbitals, meaning the s and p or...
- Thu Oct 13, 2016 9:15 pm
- Forum: Trends in The Periodic Table
- Topic: Ionization
- Replies: 1
- Views: 573
Re: Ionization
Just to recap: Ionization energy is the energy required to remove an electron from an atom in the gaseous state. The first ionization energy is based on a neutral atom. After taking away the first electron, the atom becomes a positively charged ion. This means that the positively charged nucleus pul...
- Thu Oct 06, 2016 7:12 pm
- Forum: Properties of Light
- Topic: Chem Workbook, Quiz 1 Preparation, Problem #7 [ENDORSED]
- Replies: 2
- Views: 926
Re: Chem Workbook, Quiz 1 Preparation, Problem #7 [ENDORSED]
For the answer, you have to use the equation E=λv, because they give you the wavelength, you must manipulate the equation to v=c/λ They give you the wavelength in nanometers, so you have to convert 6.2x10^2 nm to meters. This way it can cancel out with the units for c which are m/s. After the calcul...
- Tue Sep 27, 2016 12:14 am
- Forum: Accuracy, Precision, Mole, Other Definitions
- Topic: Fundamentals E.21: Amount in moles vs Number of molecules vs Formula units
- Replies: 5
- Views: 4109
Re: Fundamentals E.21: Amount in moles vs Number of molecules vs Formula units
In terms of calculation, you would treat formula units and molecules in the same way. If you're trying to find how many formula units/molecules are present, you would multiply the number of moles of the substance by 6.022x10 23 in both cases. To get more technical: a molecule refers to a group of 2 ...