Search found 6 matches

by tessadalke
Tue Oct 16, 2018 3:11 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Calculating Electron Transmission for H-atom
Replies: 2
Views: 53

Calculating Electron Transmission for H-atom

For the example he did in class:

Calculate the freq of light emitted by a hydrogen atom when an electron makes a transition from the fourth to the second principal quantum level. En=-hR/n^2

He had E4= -1/16hR and E2=-1/4hR

Can someone tell me where he got -1/16 and -1/4?
by tessadalke
Tue Oct 16, 2018 2:50 pm
Forum: Bohr Frequency Condition, H-Atom , Atomic Spectroscopy
Topic: Bohr Formula
Replies: 4
Views: 122

Bohr Formula

Could someone explain to me when I would use hR/n^2?
by tessadalke
Tue Oct 16, 2018 1:32 pm
Forum: Einstein Equation
Topic: Energy
Replies: 2
Views: 62

Energy

How do we find the energy of a photon using E=hv?
by tessadalke
Mon Oct 15, 2018 11:50 am
Forum: Properties of Light
Topic: Wave Model
Replies: 3
Views: 104

Wave Model

Does anyone know what we should specifically know about electromagnetic radiation/the wave model? I think I may be overthinking it.
by tessadalke
Mon Oct 08, 2018 1:19 pm
Forum: Accuracy, Precision, Mole, Other Definitions
Topic: Net Number Of Moles
Replies: 5
Views: 1809

Net Number Of Moles

This topic seems pretty simple but I was just wondering how to find the net number of moles produces after combustion.
by tessadalke
Sat Oct 06, 2018 1:32 pm
Forum: Limiting Reactant Calculations
Topic: Calculating the amount of moles
Replies: 3
Views: 109

Calculating the amount of moles

How many moles of CO2(g) are produced when 1 kg of CaCO3(s) is used to neutralize an acid spill? The equation for the reaction at 1 atm and 25 degrees C is:

CaCO3(s) + H2SO4(aq) ---> CaSO4(s) + CO2(g) + H2O(l)

For this question, I am just confused about where to start.

Go to advanced search