Search found 31 matches

by MeghetyManoyan1A
Sun Jun 10, 2018 2:45 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7437
Views: 987407

Re: Post All Chemistry Jokes Here

Which element is the coldest?
Brrryllium
by MeghetyManoyan1A
Sun Jun 10, 2018 2:31 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Atoms in a Plane
Replies: 4
Views: 217

Atoms in a Plane

How can you tell which/how many atoms in a structure lie in the same plane?
by MeghetyManoyan1A
Sun Jun 10, 2018 12:36 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7437
Views: 987407

Re: Post All Chemistry Jokes Here

What is it called when the Queen of England farts?
A noble gas
by MeghetyManoyan1A
Sun Jun 03, 2018 2:35 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7437
Views: 987407

Re: Post All Chemistry Jokes Here

What did the bartender say when oxygen, hydrogen, sulfur, sodium, and phosphorus walking into the bar?
OH SNaP!
by MeghetyManoyan1A
Sun Jun 03, 2018 2:28 pm
Forum: Hybridization
Topic: Hybridization
Replies: 3
Views: 125

Re: Hybridization

Hybridization is when atomic orbitals interfere with each other/combine and form new orbitals, specifically 4 orbitals of equal energy. For example, for sp^3 orbitals, the energy level lies above that of s and below p. The bonds that hybrid orbitals form are stronger than those formed with unhybridi...
by MeghetyManoyan1A
Sun Jun 03, 2018 2:09 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7437
Views: 987407

Re: Post All Chemistry Jokes Here

I must be an exothermic reaction, because I'm running out of energy.
by MeghetyManoyan1A
Sun May 27, 2018 1:12 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7437
Views: 987407

Re: Post All Chemistry Jokes Here

Carbon and a hydrogen went on a date. They really bonded.
by MeghetyManoyan1A
Sun May 27, 2018 1:02 pm
Forum: Resonance Structures
Topic: Clarifying wording
Replies: 2
Views: 244

Re: Clarifying wording

Yes, it refers to the most plausible resonance structure, which has the lowest formal charge/is the most stable.
by MeghetyManoyan1A
Sun May 27, 2018 12:03 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7437
Views: 987407

Re: Post All Chemistry Jokes Here

What do dipoles say in passing?
"Do you have a moment?"
by MeghetyManoyan1A
Sun May 27, 2018 11:44 am
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: Difference in bonds
Replies: 3
Views: 230

Re: Difference in bonds

As bond order increases, so does strength. So, a triple bond is stronger than a double bond, and a double bond is stronger than a single bond. The one that is stronger is usually shorter, ie a double bond is shorter than a single bond. Also, if there are lone pairs, it can weaken a bond.
by MeghetyManoyan1A
Sat May 19, 2018 9:41 pm
Forum: Resonance Structures
Topic: Sulfate Lewis Structure
Replies: 2
Views: 137

Re: Sulfate Lewis Structure

Yes, there can be a resonance structure for this, as you can vary the placement/rotate the bonds.
by MeghetyManoyan1A
Sat May 19, 2018 9:35 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7437
Views: 987407

Re: Post All Chemistry Jokes Here

What show do cesium and iodine love watching together?
CSI
by MeghetyManoyan1A
Sun May 13, 2018 10:08 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7437
Views: 987407

Re: Post All Chemistry Jokes Here

A photon checks into a hotel and is asked if he needs any help with his luggage.
He says, "No, I'm traveling light"
by MeghetyManoyan1A
Sun May 13, 2018 9:57 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7437
Views: 987407

Re: Post All Chemistry Jokes Here

The noble gases walk into a bar. No one reacts.
by MeghetyManoyan1A
Sun May 13, 2018 9:53 pm
Forum: Quantum Numbers and The H-Atom
Topic: xyz
Replies: 2
Views: 205

Re: xyz

The p subshell has 3 possible orientations, where one of the three orbitals can exist. They describe the axes where the lobes of the orbital lies. So, Px lies on the x-axis, Py lies on the y-axis, and Pz lies on the z axis.
by MeghetyManoyan1A
Sun May 13, 2018 9:34 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: cations
Replies: 5
Views: 179

Re: cations

Cations are ions that have lost an electron/electrons. Since they have less electrons, the nucleus is able to pull them in more tightly. On the other hand, anions gain electrons. Having more electrons will cause more repulsion, leading to a larger size, relative to its parent atom.
by MeghetyManoyan1A
Sun May 06, 2018 6:48 pm
Forum: Trends in The Periodic Table
Topic: Trends to Know
Replies: 12
Views: 471

Re: Trends to Know

There's the trend of electronegativity. As you move from left to right, electronegativity increases, and as you move from top to bottom, electronegativity decreases, with some exceptions.
by MeghetyManoyan1A
Sun May 06, 2018 6:42 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7437
Views: 987407

Re: Post All Chemistry Jokes Here

What do you call a clown who's in jail?

A silicon.
by MeghetyManoyan1A
Sun May 06, 2018 6:34 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Percentages When Solving for Molecular Formula
Replies: 2
Views: 201

Re: Percentages When Solving for Molecular Formula

Because you are given the percentages, and they add up to a 100%, you can just use the numbers as they are. However, if you had the numbers expressed in grams, then you would have to find the percent mass composition of each element, and then, assume there is 100g of the sample. This just means that...
by MeghetyManoyan1A
Sun Apr 29, 2018 9:38 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: 2.37
Replies: 2
Views: 108

Re: 2.37

This is false because electrons that have l=2 are in the d-orbital, so its angular momentum is larger than that of l=1, which is the p-orbital. This means that the electron doesn't get as close to the nucleus in the d-orbital, having less shielding than the p-orbital. Zeff is the effective nuclear c...
by MeghetyManoyan1A
Sun Apr 29, 2018 4:13 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7437
Views: 987407

Re: Post All Chemistry Jokes Here

What kind of fish is made out of 2 sodium atoms?
2Na
by MeghetyManoyan1A
Sun Apr 22, 2018 11:23 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7437
Views: 987407

Re: Post All Chemistry Jokes Here

What's wrong with a joke involving Cobalt, Radon, and Ytterium?
it's CoRnY
by MeghetyManoyan1A
Sun Apr 22, 2018 10:12 pm
Forum: Photoelectric Effect
Topic: HW 1.33 (Part C) [ENDORSED]
Replies: 1
Views: 102

HW 1.33 (Part C) [ENDORSED]

For #33 part c, which asks " What is the wavelength of the radiation that caused photoejection of the electron," do we use the given threshold energy to find the wavelength? Or do we need to find E=hv using the photoelectric effect equation, then find the wavelength?
Thanks!
by MeghetyManoyan1A
Sun Apr 22, 2018 10:06 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7437
Views: 987407

Re: Post All Chemistry Jokes Here

Why does a hamburger have less energy than steak?

Because it's in the ground state!
by MeghetyManoyan1A
Sun Apr 22, 2018 3:03 pm
Forum: Properties of Light
Topic: Test 2 and Wavelengths/ Frequencies Table
Replies: 3
Views: 117

Re: Test 2 and Wavelengths/ Frequencies Table

I think we should know that generally, wavelengths of 400nm-700nm are visible light/belong to the Balmer series, as there were some homework questions like that. However, I don't think we need to memorize the wavelengths corresponding to each color of light, or other details like that. Also, we shou...
by MeghetyManoyan1A
Sun Apr 15, 2018 8:38 pm
Forum: Properties of Light
Topic: HW 1.9 [ENDORSED]
Replies: 1
Views: 133

Re: HW 1.9 [ENDORSED]

When you convert nm to meters, you get 2.5x10^-9 meters. Using the formula, you need to divide c (the speed of light), which is 3.0x10^8 m/s, by the wavelength, which you found to be 2.5x10^-9 meters. This should give you 1.2x10^17 Hz as the frequency.
by MeghetyManoyan1A
Sun Apr 15, 2018 12:03 pm
Forum: Molarity, Solutions, Dilutions
Topic: Relationship between Molarity and Concentration?
Replies: 3
Views: 242

Re: Relationship between Molarity and Concentration?

Yes, you can also use the formula M=n/V if you are given the number of moles of a solute and the volume of the solvent, to find the molarity/concentration of a solution.
by MeghetyManoyan1A
Sun Apr 15, 2018 11:58 am
Forum: Limiting Reactant Calculations
Topic: What To Do When Mole Ratios Are Present? [ENDORSED]
Replies: 2
Views: 149

Re: What To Do When Mole Ratios Are Present? [ENDORSED]

You have to multiply by the relative ratio. For example, if the ratio was 3:4, you would multiply the moles of the reactant by (4/3) to find the amount of the product that can be produced. If it asks for the amount of product produced, in grams, you wold just convert it from moles to grams using the...
by MeghetyManoyan1A
Sun Apr 08, 2018 7:51 pm
Forum: Molarity, Solutions, Dilutions
Topic: Variables
Replies: 5
Views: 176

Re: Variables

In the formula, M1V1=M2V2, M1 and V1 represent the initial molarity and initial volume, respectively, while M2 and V2 represent the final molarity and volume of a solution.
g/mol is the unit for molar mass.
M is the molarity, in mol/L
by MeghetyManoyan1A
Sun Apr 08, 2018 7:37 pm
Forum: Limiting Reactant Calculations
Topic: M11 HW
Replies: 4
Views: 203

M11 HW

For question M11 from the textbook, it states that a second reaction will occur "if enough oxygen is present." Because of this statement, can we assume that oxygen is the limiting reactant of the second reaction? Or would we need to show calculations to prove this?
by MeghetyManoyan1A
Sun Apr 08, 2018 4:05 pm
Forum: Molarity, Solutions, Dilutions
Topic: G.23 from HW [ENDORSED]
Replies: 4
Views: 232

G.23 from HW [ENDORSED]

For problem G.23, "In medicine it is sometimes necessary to prepare solutions with a specific concentration of a given ion. A lab technician has made up a 100.0-mL solution containing 0.50 g of NaCl and 0.30 g of KCl, as well as glucose and other sugars. What is the concentration of chloride io...

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