CHEMISTRY COMMUNITY

Lexy Swenson 1F

You'd think that atoms bonding with other atoms would mean they're being friendly, but really they steal each other's electrons.
How Ionic.

A sign outside the chemistry hotel reads "Great day rates, Even better NO3's"

What do you call a periodic table with gold missing?
Au Revoir

Lexy Swenson 1F

What did you do with element 43 last night?
None of your Bismuth

What happens to nitrogen when there's sunlight?
It becomes daytrogen

What is the TV show that cesium and iodine love to watch together?
CSI

Lexy Swenson 1F

Organic chemistry is difficult. Those who study it have alkynes of trouble.

Teacher: What is the formula for water?
Student: H, I, J, K, L, M, N, O
Teacher: That's not what I taught you.
Student: But you said the formula for water was...H to O.

Lexy Swenson 1F

A small furry animal walks into a bar. The bartender says, "Sorry, our maximum occupancy is only 6.00 x 1023. We can't serve a mole."

Cole's law: Thinly sliced cabbage

Have you heard the one about a chemist who was reading a book about helium and just couldn't put it down?

Lexy Swenson 1F

Why do chemistry professors like to teach about ammonia? Because it's basic stuff. Why did Carbon marry Hydrogen? They bonded well from the minute they met A small piece of sodium which lived in a testube fell in love with a Bunsen burner. "Bunsen! my flame! I melt whenever I see you" said...

Lexy Swenson 1F

I heard that Oxygen and Magnesium were going out and I was like O Mg.

One day on the Tonight Show, Jay Leno showed a classified add that read: "Do you have mole problems? If so, call Avogadro at 602-1023."

We hope your year is very phosphorous.

:)

Lexy Swenson 1F

Why did the white bear dissolve in water? Because it was polar How do you tell the difference between a chemist and a politician? Ask them to pronounce "unionized" Have you heard the one about the girl with the initials P B? She was easily mislead Never trust an atom, they make up everythi...

Lexy Swenson 1F

I asked the guy sitting next to me if he had any Sodium Hypobromite…
He said NaBrO

Q: What do you do with a sick chemist?
A: If you can't helium, and you can't curium, then you might as well barium

Q: What do you call a tooth in a glass of water?
A: One molar solution.

Lexy Swenson 1F

What is the chemical form for Coffee?
CoFe2

Um- The atomic symbol for confusion

My wife is like Nitrogen and Silver: NAg NAg NAg

Lexy Swenson 1F

I have many chemistry jokes.. I'm just afraid they won't get a good reaction.

Lexy Swenson 1F

In the solutions manual for this problem, it describes how in parts (a) (B) and (d) all have a proton transferred from NH4+ to a base. For example, in part (a) it states the NH4+ acid transfers a proton to H20, the base, but both are reactants. I thought acids are supposed to transfer protons ot pro...

Lexy Swenson 1F

What is a cation afraid of? A dogion.
How many moles are in a guacamole? Avocado's number.
Why does hamburger have lower energy than steak? Because it's in the ground state.

Lexy Swenson 1F

This problem in the textbook asks whether C2+, C2, or C2- is expected to have the lowest ionization energy. The solutions manual states that based off of their electron configurations, C2- is expected to have the lowest ionization energy because its electron is lost from a higher energy MO than eith...

Lexy Swenson 1F

In the practice 2010 midterm for question 7 part c they ask if the molecule H2CBr2 is polar or nonpolar. I thought it was nonpolar because the Hydrogen and Bromine's are evenly on opposite sides of each other, so wouldn't their charges cancel out? The solutions answer says it's a polar molecule and ...

Lexy Swenson 1F

For part D of this question it asks to identify the hybrid orbitals used by the atom Se in SeF3+. The answer solution says it is sp3, but sp3 is for tetrahedral and wouldn't this species not be a tetrahedral because there are only three regions of electron density? Not sure if I am misunderstanding ...

Lexy Swenson 1F

Does anyone understand why Ruthenium's (Ru) electron configuration is 4d7 5s1? Is this more stable than it would be to be 4d6 5s2?
Thanks!

Lexy Swenson 1F

This is a follow up question.. So I understand why the f shell is filled to the 14 (since there are 20 valence electrons) but wouldn't the d shell want to be 5d^5 to be more stable and the configuration would be 4f^14 5d^5 6s^1. Isn't this more stable? Because its actual electron configuration is 4f...

Lexy Swenson 1F

I'm not sure how for part (e) in this problem the electron configuration for Tungsten (W) is 4f^14 5d^4 6s^2 if it only has 6 valence electrons where does the 4f^14 come from?

Lexy Swenson 1F

Hi everyone, There may be a simple explanation but I am confused on how the solutions manual gets the answers for how many electrons can have the following quantum numbers in an atom: For example: (a) n=2, l=1 there are six electrons (b) n=4, l=2, m=-2 there are two electrons (c) n=2 there are eight...

Lexy Swenson 1F

For number 15 in Chapter 1 (atoms: the quantum world) of the Chemistry Textbook, I understand why n=1 (because it is the Lyman series), and I get the numbers they plugged in the Rydberg equation to find n=2, but I'm not sure how the solutions guide concludes that n2=3. Can anyone clarify this? Thank...

Lexy Swenson 1F

1. Anyone know any jokes about sodium? Na

2. The name's bond. Ionic bond. Taken, not shared.

3. Why did the white furry bear dissolve in water? Because it was polar

4.What do you do with dead chemists? Barium

5.What weapon can you make from the elements potassium, nickel, and iron? A KNiFe

CHEMISTRY COMMUNITY

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Chapter 12 Question 9

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Ch 4 Question 67 [ENDORSED]

Question 7.C 2010 Midterm Practice Exam

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Electron Configuration for Ru

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