Search found 25 matches

by Radha Patel 1D
Sat Dec 09, 2017 10:12 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788489

Re: Post All Chemistry Jokes Here

Q: If H2O is the formula for water, what is the formula for ice?
A: H2O cubed.
by Radha Patel 1D
Sat Dec 09, 2017 10:11 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788489

Re: Post All Chemistry Jokes Here

Q: What did the scientist say when he found 2 isotopes of helium?
A: HeHe
by Radha Patel 1D
Sat Dec 09, 2017 10:10 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788489

Re: Post All Chemistry Jokes Here

Q: What is the chemical formula for "coffee"?
A: CoFe2
by Radha Patel 1D
Sat Dec 09, 2017 10:10 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788489

Re: Post All Chemistry Jokes Here

Why do chemists like nitrates so much?
They're cheaper than day rates.
by Radha Patel 1D
Sat Dec 09, 2017 10:10 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788489

Re: Post All Chemistry Jokes Here

Don't trust atoms, they make up everything.
by Radha Patel 1D
Wed Dec 06, 2017 4:13 pm
Forum: Calculating pH or pOH for Strong & Weak Acids & Bases
Topic: ICE Chart [ENDORSED]
Replies: 9
Views: 316

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?
by Radha Patel 1D
Wed Dec 06, 2017 4:11 pm
Forum: Dipole Moments
Topic: Dipole Moments and Polarity
Replies: 9
Views: 308

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.
by Radha Patel 1D
Wed Dec 06, 2017 4:10 pm
Forum: Hybridization
Topic: Delocalized pi bonds [ENDORSED]
Replies: 2
Views: 136

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).
by Radha Patel 1D
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: 218

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...
by Radha Patel 1D
Thu Nov 23, 2017 2:47 pm
Forum: Dipole Moments
Topic: Why is CH2Cl2 polar and CCl4 is nonpolar?
Replies: 3
Views: 36090

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?
by Radha Patel 1D
Thu Nov 23, 2017 2:40 pm
Forum: Lewis Structures
Topic: Lewis structure of OSbCl3 and question about transition meta
Replies: 2
Views: 555

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!
by Radha Patel 1D
Sun Nov 19, 2017 12:50 am
Forum: Determining Molecular Shape (VSEPR)
Topic: Radicals and Their Shape
Replies: 4
Views: 201

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?
by Radha Patel 1D
Sun Nov 19, 2017 12:46 am
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: Ionization energy
Replies: 2
Views: 166

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.
by Radha Patel 1D
Fri Nov 10, 2017 11:06 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788489

Re: Post All Chemistry Jokes Here

Q: Why did the noble gas cry?
A: Because all his friends Argon
by Radha Patel 1D
Mon Nov 06, 2017 11:50 pm
Forum: Bond Lengths & Energies
Topic: Bond Strength In Same Group
Replies: 6
Views: 571

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?
by Radha Patel 1D
Sun Nov 05, 2017 3:03 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788489

Re: Post All Chemistry Jokes Here

Baby, I know chemistry...

and you’ve got one significant figure.
by Radha Patel 1D
Sun Nov 05, 2017 3:02 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788489

Re: Post All Chemistry Jokes Here

What do you do with a dead chemist?

Barium

LOL
by Radha Patel 1D
Thu Oct 26, 2017 2:39 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: 2.1
Replies: 4
Views: 728

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?
by Radha Patel 1D
Thu Oct 26, 2017 2:34 am
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: 2.1
Replies: 4
Views: 728

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...
by Radha Patel 1D
Thu Oct 19, 2017 11:21 pm
Forum: Einstein Equation
Topic: Chapter 1 #23
Replies: 6
Views: 419

Re: Chapter 1 #23

Exactly, 1.602×10−19 is just the amount of Joules equivalent to electron volts.
by Radha Patel 1D
Thu Oct 19, 2017 11:18 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788489

Re: Post All Chemistry Jokes Here

Q: What kind of dogs do chemists have?
A: Laboratory Retrievers
by Radha Patel 1D
Sat Oct 14, 2017 7:13 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788489

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".
by Radha Patel 1D
Tue Oct 10, 2017 12:59 am
Forum: Heisenberg Indeterminacy (Uncertainty) Equation
Topic: Heisenburg Uncertainty Principle Module Question
Replies: 2
Views: 801

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.
by Radha Patel 1D
Fri Oct 06, 2017 8:43 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7337
Views: 788489

Re: Post All Chemistry Jokes Here

What kind of fish is made out of 2 sodium atoms?
2 Na
by Radha Patel 1D
Wed Oct 04, 2017 11:05 am
Forum: Balancing Chemical Reactions
Topic: Balancing Process
Replies: 11
Views: 399

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.

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