## Search found 111 matches

Thu Oct 17, 2019 12:28 pm
Forum: Wave Functions and s-, p-, d-, f- Orbitals
Topic: 1D #11
Replies: 3
Views: 68

### Re: 1D #11

Another way to do this is match the letters spdf to the l numbers: 0 is s, 1 is p, 2 is d, and 3 is f. As mentioned in class the number of orbitals for s,p,d,f is 1,3,5,7 respectively.
Sun Oct 13, 2019 11:16 am
Forum: DeBroglie Equation
Topic: When to use DeBroglie Equation
Replies: 16
Views: 315

### Re: When to use DeBroglie Equation

You can't use the DeBroglie equation in terms of light because the light equation involves the constant C which is the speed of light, so the EM equations cannot be used for any particle either (doesn't work either way). The DeBroglie equation works only for particles which have wavelike properties.
Sun Oct 13, 2019 11:14 am
Forum: Properties of Light
Topic: Wave Properties of electrons
Replies: 7
Views: 117

### Re: Wave Properties of electrons

Diffraction is basically when the light passes through a small slit/opening and causes different kinds of patterns. These patterns involve constructive or destructive interference. In constructive interference the amplitudes of two(or more) waves "add up" causing the amplitude to increase ...
Sat Oct 12, 2019 3:35 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Photoelectric Effect
Replies: 4
Views: 77

### Re: Photoelectric Effect

Dr. Lavelle emphasized in lecture that intensity of the light did not matter when it came to exciting the electron because it only increased the amplitude, not changing the wavelength or frequency. But when other frequencies are used, they do have the potential to remove an electron from the surface.
Sat Oct 12, 2019 2:39 pm
Forum: Properties of Electrons
Topic: Multi-Electron Systems
Replies: 4
Views: 49

### Re: Multi-Electron Systems

I believe the Bohr model can be used for any one-electron system, however since hydrogen is the most common it is applied to a hydrogen atom. Technically other elements can have one electron but none of them except hydrogen will be stable in that state.
Sat Oct 12, 2019 2:36 pm
Forum: Properties of Electrons
Topic: Electron After Excited State
Replies: 7
Views: 115

### Re: Electron After Excited State

If an electron gets excited, that means that it needs to have absorbed energy in order to jump to another energy level. However, when it jumps to another level its position becomes less stable then it gives off energy in the form of a photon of light and goes back down.
Sat Oct 05, 2019 4:27 pm
Forum: Balancing Chemical Reactions
Topic: balancing charges
Replies: 4
Views: 92

### Re: balancing charges

Since we aren't dealing with oxidation reduction reactions yet it is not needed to balance charges; we are simply balancing the number of atoms of certain elements on each side. Balancing charges will not be covered on Friday's test.
Sat Oct 05, 2019 4:25 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Wrong Textbook
Replies: 12
Views: 479

### Re: Wrong Textbook

I also have the 6th edition and all the problems and writing is identical, as well as the problem numbers. Just be careful not to mix up page numbers as they are different in the 6th and 7th editions.
Fri Oct 04, 2019 1:29 pm
Forum: Balancing Chemical Reactions
Topic: Fractions in front of compounds
Replies: 12
Views: 180

### Re: Fractions in front of compounds

Because it doesn't make much sense to have a fraction of a mole (since a mole is not a perfect number) it should be multiplied until all stoichiometric coefficents are whole numbers.
Fri Oct 04, 2019 1:27 pm
Forum: Molarity, Solutions, Dilutions
Topic: Volume formulas
Replies: 6
Views: 108

### Re: Volume formulas

For me the most straightforward way is to use the equation m1v1=m2v2 then plug in molarities and volumes to find the unknown. I believe this equation (or alternate versions of this) should be all we need for this section.
Fri Oct 04, 2019 1:26 pm
Forum: Empirical & Molecular Formulas
Topic: When should one start rounding in a problem?
Replies: 11
Views: 231

### Re: When should one start rounding in a problem?

You should probably keep from rounding until the very end, then round; I believe that is the most accurate.