CHEMISTRY COMMUNITY

Radha Patel 1D

Q: If H2O is the formula for water, what is the formula for ice?
A: H2O cubed.

Radha Patel 1D

Q: What did the scientist say when he found 2 isotopes of helium?
A: HeHe

Radha Patel 1D

Q: What is the chemical formula for "coffee"?
A: CoFe2

Radha Patel 1D

Why do chemists like nitrates so much?
They're cheaper than day rates.

Radha Patel 1D

Don't trust atoms, they make up everything.

Radha Patel 1D

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?

Radha Patel 1D

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.

Radha Patel 1D

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).

Radha Patel 1D

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...

Radha Patel 1D

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?

Radha Patel 1D

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!

Radha Patel 1D

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?

Radha Patel 1D

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.

Radha Patel 1D

Q: Why did the noble gas cry?
A: Because all his friends Argon

Radha Patel 1D

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?

Radha Patel 1D

Baby, I know chemistry...

and you’ve got one significant figure.

Radha Patel 1D

What do you do with a dead chemist?

Barium

LOL

Radha Patel 1D

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?

Radha Patel 1D

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...

Radha Patel 1D

Exactly, 1.602×10−19 is just the amount of Joules equivalent to electron volts.

Radha Patel 1D

Q: What kind of dogs do chemists have?
A: Laboratory Retrievers

Radha Patel 1D

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".

Radha Patel 1D

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.

Radha Patel 1D

What kind of fish is made out of 2 sodium atoms?
2 Na

Radha Patel 1D

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.

CHEMISTRY COMMUNITY

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