CHEMISTRY COMMUNITY

Taravat_Lakzian_1C

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

Taravat_Lakzian_1C

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

Taravat_Lakzian_1C

Which biochemicals wash up on beaches?
-Nucleotides

Taravat_Lakzian_1C

What do chemists put up during Christmas?
-A Chemistree

Taravat_Lakzian_1C

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.

Taravat_Lakzian_1C

When writing the cell diagram, do we write the edited version of the half reaction (such as after being multiplied by 2) or do we write the original version?

Taravat_Lakzian_1C

In #37, it asks to determine the potential of each of the following cells. How would you determine the potential of the cell when for example you are given:
Pt(s)|H2(g, 1.0 bar)|HCl(aq, 0.075 M)||HCl (aq, 1.0 mol/L)|H2(g, 1.0 bar)|Pt(s)
Any help would be appreciated!

Taravat_Lakzian_1C

That could be a possible explanation, but it would best to draw out lewis structures of COF2 and BF3. By drawing out the structures, you can see that the elements can be in different positions, and whichever molecule has the most displacements, it will have higher entropy.

Taravat_Lakzian_1C

I believe it is derived from the equation: Cp,m=Cv,m + R Cp,m=3/2R + R Cp,m = 5/2 R Section 8.10 in the book provides more information about the molar heat capacity at a constant volume/pressure for monatomic gases. I don't think we have to memorize this since it is also found on the back of our per...

Taravat_Lakzian_1C

Could someone please explain how to do the following problem: Benzene is more stable and less reactive than would be predicted from its Kekule structures. Use the mean bond enthalpies in table 8.7 to calculate the lowering in molar energy when resonance is allowed between the Kekule structures of be...

Taravat_Lakzian_1C

Could someone please explain what a polydentate is and how you would determine whether it is monodentate, bidentate, tridentate and so on?

Taravat_Lakzian_1C

For question 43, it gives you that the bond angle of the sp^3 hybridized atom is 109.5 degrees and the bond angle of an sp^2 hybridized atom is 120 degrees. The question asks if you expect the bond angle between two hybrid orbitals to increase or decrease as the s-character of the hybrids is increas...

Taravat_Lakzian_1C

For question 43, it gives you that the bond angle of the sp^3 hybridized atom is 109.5 degrees and the bond angle of an sp^2 hybridized atom is 120 degrees. The question asks if you expect the bond angle between two hybrid orbitals to increase or decrease as the s-character of the hybrids is increas...

Taravat_Lakzian_1C

How do you determine whether a molecule is polar or nonpolar?

Taravat_Lakzian_1C

For question 39, it asks to draw the lewis structure for ammonium chloride, potassium phosphide, and sodium hypochlorite. I looked in the solutions manual and the lewis structure for all of them were drawn separately (ex: phosphorus is surrounded by potassium but they're not bonded together). Could ...

Taravat_Lakzian_1C

Could someone please explain why the ionization energy for oxygen is lower than that of nitrogen or fluorine?

Taravat_Lakzian_1C

You are given that the ultraviolet spectrum of atomic hydrogen is observed at 102.6 nm. Since the ultraviolet spectrum of atomic hydrogen is also known as the Lyman series, it has a final energy level of n1=1. So, you use the equation v(frequency)=c/lambda to solve for the frequency (2.998 x 10^8 m ...

Taravat_Lakzian_1C

For question 1.13, it says to use the Rydberg formula for atomic hydrogen to calculate the wavelength of radiation generated by the transition from n=4 to n=2. What is the Rydberg formula?

CHEMISTRY COMMUNITY

Search found 18 matches

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Re: Post All Chemistry Jokes Here

Cell Diagram

Homework 14.37

Re: HW: 9.23 COF2 and BF3

Re: 8.31

HW 8.77

Polydentate [ENDORSED]

Homework 4.43

Homework 4.43

Polar vs Nonpolar

Homework 3.39

Ionization Energy [ENDORSED]

Re: Atomic Spectra Question [ENDORSED]

Atomic Spectrum