Search found 23 matches
Search found 23 matches • Page 1 of 1
- Sun May 27, 2018 5:50 pm
- Forum: Determining Molecular Shape (VSEPR)
- Topic: Bond Angles
- Replies: 1
- Views: 109
How do you know if bond angles are exactly a number or less than a certain number because I know for some questions the answers are exactly 120 degrees but others are for example angles are less than 109.5 degrees
- Thu May 17, 2018 7:26 pm
- Forum: Formal Charge and Oxidation Numbers
- Topic: Formal Charge
- Replies: 3
- Views: 244
When there is a - in front of a molecule you add an electron to the formal charge and when there is a + you subtract an electron from the overall formal charge right?
Coulombic attraction is the attraction between oppositely charged particles. For example, the protons in the nucleus of an atom have an attraction for the electrons surrounding the nucleus. The problem is asking you which has the greatest electronegativity.
- Sun May 13, 2018 2:49 pm
- Forum: Lewis Structures
- Topic: Most Important Lewis Structure
- Replies: 4
- Views: 194
When asking the question to draw the most important lewis structure, does that mean to just draw the Lewis Structure that makes its elements most stable (in accordance with addition of double bonding and such) ?
The question asks The energy required to break a C-C bond in a molecule is 348 kJxmol-1. Will visible light be able to break this bond? If yes, what is the color of that light? If not, what type of electromagnetic radiation will be suitable? My question is once I know if the visible light can break ...
- Sun Apr 22, 2018 12:51 pm
- Forum: DeBroglie Equation
- Topic: Homework 1.33 Part C
- Replies: 3
- Views: 157
I believe that going back to Friday's lecture we talked about how energy is released through photoejection of an electron meaning there would be kinetic energy. So overall, yes, we know to use kinetic energy because it is about the photoelectric effect. Photoelectric problems follow the format of th...
- Sun Apr 15, 2018 8:32 pm
- Forum: Properties of Light
- Topic: Calculating the energy of a photon [ENDORSED]
- Replies: 2
- Views: 132
In example 1.4, question a asks what is the energy of a single photon of blue light of frequency 6.4x10^14 Hz. To solve you use the equation E(1 photon)=hv. We are solving for e and I already know h being the frequency of the blue light but how do I find v? The example shows that you get (6.626x10^-...
- Sat Apr 14, 2018 11:38 pm
- Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
- Topic: Homework 1.13 [ENDORSED]
- Replies: 3
- Views: 163
a) Use the Rydberg formula for atomic hydrogen to calculate the wavelength of radiation generated by the transition from n=4 to n=2 For this part of the homework question, I need help understanding how to find c through the relationship of c=vλ beforehand so that I can then actually solve for the wa...
- Sat Apr 14, 2018 11:24 pm
- Forum: Balancing Chemical Reactions
- Topic: Balancing Chemical Equations and Combustion
- Replies: 7
- Views: 372
Combustion reactions involve hydrogen or a hydrocarbon reacting with oxygen and usually always produce water and carbon dioxide as their products. After you figure out which products make sense from these reactants, you can balance the equation.