Review LectureWill be available online in its entirety

Quantum Numbers-

n l ml

1 0 0

2 01

0-1,0,1

3 012

0-1,0,1

-2,-1,0,1,2

4 0123

01,0,1

2,-1,0,1,2-3,-2,-1,0,1,2,3

Table of Allowed Values

Limiting ReagentsConvert all starting material to moles of one reactant or product

I choose CaCl2 because the next part of the questions asks from the amount of CaCl2 made.

Compare amounts of product made from each starting material.

This assumes that all starting material is converted, its only true of the limiting reagentLowest amount of product made means that is the limiting reagent.

How much CaCO3 would be left over?

Empirical FormulaIn combustion problems (in this class) all

C comes from compound and turns into CO2

H comes from compound and turns into H2O

Oxygen comes from both the compound and the O2 gasIf we know the total mass combusted, and total C and H, we can solve for leftover mass and that will equal O from the compound

Find lowest common ratio (use divide my the smallest number trick)

Black Body Radiation

scienceblogs.com

Blackbody radiation depends only on temperature of object

Given that light bulbs are around 2700 K, why are incandescent bulbs inefficient light sources?

Given that our sun’s temperature is about 5700K what light does our sun emit?

Given the differences in the graph above, what would you expect to have a higher temperature, red giant stars or white giant stars?

Rydberg Equation: DerivationIf the energy of a given energy level is defined as En=-Rh(1/n2). We can find the difference in energy shells by Enf-EniEither of these are often shown

in text books. Use whichever you prefer but be sure not to mix them up. One has a negative one does not, but they are the same equation!!!!Rydberg's constant is experimental value confirmed by Shrodinger’s theory

ΔE is +

ΔE is -ΔE is positive if going from low to high energy shell i.e. ground state to anything, 25 ect… Words such as “photon absorbed” will be used.

ΔE is negative if going from high to low energy. i.e. anything to ground state, 52 ect… Words such as “photon emitted” will be used.

E=hν=hc/λ This energy is the energy of one photon. This must always be positive!

Energies of Orbitals

Ect….to infinity

Ect….to infinity

E

Hydrogen Everything other than Hydrogen

Electromagnetic SpectrumAs wavelength increases what happens to frequency? does it:A)IncreaseB)Decrease Decrease

Answer the Following:Which has greater frequency red light or UV light?Which has greater energy? IR light or Orange light

Does blue light have greater speed than red light?

UV

orangeNO! all have same speed

As wavelength increases what happens to Energy? does it:A)IncreaseB)Decrease Decrease

Other Transitions

LasersLight Amplification by Stimulated Emission of Radiation.

http://www.infoplease.com/images/ESCI112LASERS003.gif

Wave or Particle? Summary: Experiments show it has properties of both.

Photo electric effect: Particle like

Double split experimentwavelike

This is true of very small matterLargest so far to have measurable wave-like properties is those with mass 1610 amu

Double Split Experiment: Young

Photoelectric Effect

If the photon is exactly the energy of the work function the electrons will be knocked looseIf the energy of the photon is higher the electrons will acquire kinetic energyKE=hν-W

What do you think happens if the intensity of light is increased but the frequency of the electrons stay the same?