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Ch.7 - Quantum MechanicsWorksheetSee all chapters

# The Energy of Light

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Sections
Wavelength and Frequency
Speed of Light
The Energy of Light
Electromagnetic Spectrum
Photoelectric Effect
De Broglie Wavelength
Heisenberg Uncertainty Principle
Bohr Model
Emission Spectrum
Bohr Equation
Introduction to Quantum Mechanics
Quantum Numbers: Principal Quantum Number
Quantum Numbers: Angular Momentum Quantum Number
Quantum Numbers: Magnetic Quantum Number
Quantum Numbers: Spin Quantum Number
Quantum Numbers: Number of Electrons
Quantum Numbers: Nodes

The Energy of Light involves the use of a new variable Planck's Constant.

###### Light as Particles

Concept #1: The Energy of Light

Concept #2: Photon Energy Formulas

Example #1: Calculate the energy of a photon with a wavelength of 293.7 m.

Concept #3: Moles and Energy

Example #2: Calculate the energy for a mole of photons with a frequency of 4.29 x 1015 s-1.

Practice: Calculate the energy (in nJ) of a photon emitted by a mercury lamp with a frequency of 6.88 x 1014 Hz.

Practice: A light ray has a wavelength that is 835 µm contains 6.32 x 10-3 J of energy. How many photons does this light ray have?

Practice: How much energy (in kJ) do 4.50 moles of photons contain at a wavelength of 705 nm?