Q: If H2O is the formula for water, what is the formula for ice?
A: H2O cubed.
Search found 25 matches
- Sat Dec 09, 2017 10:12 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3928459
- Sat Dec 09, 2017 10:11 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3928459
Re: Post All Chemistry Jokes Here
Q: What did the scientist say when he found 2 isotopes of helium?
A: HeHe
A: HeHe
- Sat Dec 09, 2017 10:10 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3928459
Re: Post All Chemistry Jokes Here
Q: What is the chemical formula for "coffee"?
A: CoFe2
A: CoFe2
- Sat Dec 09, 2017 10:10 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3928459
Re: Post All Chemistry Jokes Here
Why do chemists like nitrates so much?
They're cheaper than day rates.
They're cheaper than day rates.
- Sat Dec 09, 2017 10:10 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3928459
Re: Post All Chemistry Jokes Here
Don't trust atoms, they make up everything.
- Wed Dec 06, 2017 4:13 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: ICE Chart [ENDORSED]
- Replies: 9
- Views: 1322
Re: ICE Chart [ENDORSED]
Will questions generally give you how much of a reactant is left over in the case that it is a weak acid or base? Or do we just have to calculate it using the change x variable and the initial concentration?
- Wed Dec 06, 2017 4:11 pm
- Forum: Dipole Moments
- Topic: Dipole Moments and Polarity
- Replies: 9
- Views: 1118
Re: Dipole Moments and Polarity
Electronegativity is the average of electron affinity and ionization energy which basically means that if it is hard to take an electron away from an atom and if it wants another electron to fill its shell, it is more electronegative.
- Wed Dec 06, 2017 4:10 pm
- Forum: Hybridization
- Topic: Delocalized pi bonds [ENDORSED]
- Replies: 2
- Views: 548
Re: Delocalized pi bonds [ENDORSED]
When a shared electron pair is delocalized, it cannot be pinned to one atom in the molecule. It is shared over the whole molecule because of its resonance (blend of structures).
- Wed Dec 06, 2017 4:00 pm
- Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
- Topic: Strength of an Acid
- Replies: 5
- Views: 1120
Re: Strength of an Acid
HF is not a strong acid because Fluorine is highly electronegative and also smaller in shape. HF is a weak acid because it does not disassociate as easily in water (the H-F bond is harder to break). As you go down the halogens, the atom sizes become bigger and the bond between the element and H beco...
- Thu Nov 23, 2017 2:47 pm
- Forum: Dipole Moments
- Topic: Why is CH2Cl2 polar and CCl4 is nonpolar?
- Replies: 3
- Views: 59612
Re: Why is CH2Cl2 polar and CCl4 is nonpolar?
How come C-Cl bonds are drawn next to each other? How come we can't put the H atoms across from each other and the Cl bonds across from each other to make the molecule nonpolar?
- Thu Nov 23, 2017 2:40 pm
- Forum: Lewis Structures
- Topic: Lewis structure of OSbCl3 and question about transition meta
- Replies: 3
- Views: 1743
Re: Lewis structure of OSbCl3 and question about transition meta
Yes, Sb has 5 valence electrons. Because it is able to have an expanded octet, it will form 3 single bonds and 1 double bond in the structure!
- Sun Nov 19, 2017 12:50 am
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Radicals and Their Shape
- Replies: 4
- Views: 967
Re: Radicals and Their Shape
If a lone pair is still considered a region of electron density how would we calculate the formal charge of the atom with half of a lone pair?
- Sun Nov 19, 2017 12:46 am
- Forum: Polarisability of Anions, The Polarizing Power of Cations
- Topic: Ionization energy
- Replies: 2
- Views: 792
Re: Ionization energy
Because N has a full half-shell and the orbitals are equally filled by one electron, it is more stable. Oxygen is closer to having a full octet and wants another electron more. It would be harder to take an electron from Oxygen's valence shell.
- Fri Nov 10, 2017 11:06 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3928459
Re: Post All Chemistry Jokes Here
Q: Why did the noble gas cry?
A: Because all his friends Argon
A: Because all his friends Argon
- Mon Nov 06, 2017 11:50 pm
- Forum: Bond Lengths & Energies
- Topic: Bond Strength In Same Group
- Replies: 6
- Views: 2226
Re: Bond Strength In Same Group
The solutions manual says that electronegativity and polarity arguments would predict the C-F bond to be weaker than the C-Br or C-Cl bond so I think there is another explanation. Does anyone know why?
- Sun Nov 05, 2017 3:03 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3928459
Re: Post All Chemistry Jokes Here
Baby, I know chemistry...
and you’ve got one significant figure.
and you’ve got one significant figure.
- Sun Nov 05, 2017 3:02 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3928459
Re: Post All Chemistry Jokes Here
What do you do with a dead chemist?
Barium
LOL
Barium
LOL
- Thu Oct 26, 2017 2:39 am
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: 2.1
- Replies: 6
- Views: 3558
Re: 2.1
Also, how come the 3d orbital is written before the 4s orbital if 3d is said to have higher energy and if 4s is filled first?
- Thu Oct 26, 2017 2:34 am
- Forum: Wave Functions and s-, p-, d-, f- Orbitals
- Topic: 2.1
- Replies: 6
- Views: 3558
Re: 2.1
I'm a little bit confused as to how jumping from n=1 to n=2 means that the atomic radius is bigger when the p-orbital is still towards the upper right spectrum of the pt. Does increasing the principal quantum number have more of an effect on the radius than the increasing of valence electrons across...
- Thu Oct 19, 2017 11:21 pm
- Forum: Einstein Equation
- Topic: Chapter 1 #23
- Replies: 6
- Views: 1240
Re: Chapter 1 #23
Exactly, 1.602×10−19 is just the amount of Joules equivalent to electron volts.
- Thu Oct 19, 2017 11:18 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3928459
Re: Post All Chemistry Jokes Here
Q: What kind of dogs do chemists have?
A: Laboratory Retrievers
A: Laboratory Retrievers
- Sat Oct 14, 2017 7:13 pm
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3928459
Re: Post All Chemistry Jokes Here
A neutron walks into a bar. He asks the bartender, "How much for a beer?" The bartender offers him a warm smile and says, "For you, no charge".
- Tue Oct 10, 2017 12:59 am
- Forum: Heisenberg Indeterminacy (Uncertainty) Equation
- Topic: Heisenburg Uncertainty Principle Module Question
- Replies: 2
- Views: 1540
Re: Heisenburg Uncertainty Principle Module Question
How does the fact that we know the position of an electron to an accuracy of 1% affect how we solve this problem? I thought we would only use 1% of the radius as our range of uncertainty.
- Fri Oct 06, 2017 8:43 am
- Forum: Student Social/Study Group
- Topic: Post All Chemistry Jokes Here
- Replies: 9651
- Views: 3928459
Re: Post All Chemistry Jokes Here
What kind of fish is made out of 2 sodium atoms?
2 Na
2 Na
- Wed Oct 04, 2017 11:05 am
- Forum: Balancing Chemical Reactions
- Topic: Balancing Process
- Replies: 11
- Views: 1256
Re: Balancing Process
Also, it's always easier to balance elements other than Carbon, Hydrogen and Oxygen first and then tackle those three in the order. The other elements usually appear in lower quantities and if you leave C H and O for the end, you may find that they may even be balanced already.