Search found 18 matches

by Taravat_Lakzian_1C
Wed Mar 15, 2017 7:22 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018535

Re: Post All Chemistry Jokes Here

Q: What do you call a tooth in a glass of water?
A: One molar solution.
by Taravat_Lakzian_1C
Sun Mar 12, 2017 5:43 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018535

Re: Post All Chemistry Jokes Here

Q: Why did the noble gas cry?
A: Because all his friends Argon
by Taravat_Lakzian_1C
Sun Mar 05, 2017 11:32 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018535

Re: Post All Chemistry Jokes Here

Which biochemicals wash up on beaches?
-Nucleotides
by Taravat_Lakzian_1C
Sun Feb 26, 2017 10:46 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018535

Re: Post All Chemistry Jokes Here

What do chemists put up during Christmas?
-A Chemistree
by Taravat_Lakzian_1C
Sun Feb 19, 2017 11:45 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7606
Views: 1018535

Re: Post All Chemistry Jokes Here

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.
by Taravat_Lakzian_1C
Sun Feb 12, 2017 11:11 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Cell Diagram
Replies: 1
Views: 202

Cell Diagram

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?
by Taravat_Lakzian_1C
Sun Feb 05, 2017 10:56 pm
Forum: Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams
Topic: Homework 14.37
Replies: 1
Views: 283

Homework 14.37

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!
by Taravat_Lakzian_1C
Sun Jan 29, 2017 11:07 pm
Forum: Concepts & Calculations Using Second Law of Thermodynamics
Topic: HW: 9.23 COF2 and BF3
Replies: 2
Views: 265

Re: HW: 9.23 COF2 and BF3

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.
by Taravat_Lakzian_1C
Sun Jan 22, 2017 11:38 pm
Forum: Concepts & Calculations Using First Law of Thermodynamics
Topic: 8.31
Replies: 2
Views: 287

Re: 8.31

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...
by Taravat_Lakzian_1C
Sun Jan 15, 2017 11:56 pm
Forum: Phase Changes & Related Calculations
Topic: HW 8.77
Replies: 1
Views: 281

HW 8.77

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...
by Taravat_Lakzian_1C
Mon Nov 14, 2016 2:12 pm
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Polydentate [ENDORSED]
Replies: 2
Views: 426

Polydentate [ENDORSED]

Could someone please explain what a polydentate is and how you would determine whether it is monodentate, bidentate, tridentate and so on?
by Taravat_Lakzian_1C
Fri Nov 04, 2016 6:21 pm
Forum: Hybridization
Topic: Homework 4.43
Replies: 1
Views: 271

Homework 4.43

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...
by Taravat_Lakzian_1C
Fri Nov 04, 2016 6:21 pm
Forum: Hybridization
Topic: Homework 4.43
Replies: 1
Views: 234

Homework 4.43

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...
by Taravat_Lakzian_1C
Sun Oct 30, 2016 9:26 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Polar vs Nonpolar
Replies: 2
Views: 387

Polar vs Nonpolar

How do you determine whether a molecule is polar or nonpolar?
by Taravat_Lakzian_1C
Sun Oct 23, 2016 9:58 pm
Forum: Lewis Structures
Topic: Homework 3.39
Replies: 1
Views: 279

Homework 3.39

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 ...
by Taravat_Lakzian_1C
Sat Oct 15, 2016 9:49 am
Forum: Ionic & Covalent Bonds
Topic: Ionization Energy [ENDORSED]
Replies: 2
Views: 351

Ionization Energy [ENDORSED]

Could someone please explain why the ionization energy for oxygen is lower than that of nitrogen or fluorine?
by Taravat_Lakzian_1C
Fri Oct 07, 2016 10:23 am
Forum: Properties of Electrons
Topic: Atomic Spectra Question [ENDORSED]
Replies: 3
Views: 526

Re: Atomic Spectra Question [ENDORSED]

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 ...
by Taravat_Lakzian_1C
Fri Sep 30, 2016 2:30 pm
Forum: Properties of Electrons
Topic: Atomic Spectrum
Replies: 1
Views: 306

Atomic Spectrum

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?

Go to advanced search