The Energy of Light Video Lessons

Concept: The Energy of Light

# Problem: My microwave operates at a wavelength of 300.0 mm (note units). What is the energy of a mole of photons generated by this microwave?  The value of Planck’s constant, h = 6.63 × 10-34 J s.a. 4.3 kJb. 4.3 × 10-5  kJc. 330 kJd. 3.3 × 10-4  kJe. 5.5 × 10-25  kJ

###### FREE Expert Solution

Calculate the energy per mole of photon released by a microwave with a wavelength of 300 mm

Recall that the energy of a photon (E) is given by:

where:

h = Planck’s constant (6.63× 10–34 J • s)

v = frequency (in s–1)

Also, recall that the frequency (v) and wavelength (λ) are related:

where:

c = speed of light (3.0 × 108 m/s)

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###### Problem Details

My microwave operates at a wavelength of 300.0 mm (note units). What is the energy of a mole of photons generated by this microwave?  The value of Planck’s constant, h = 6.63 × 10-34 J s.

a. 4.3 kJ

b. 4.3 × 10-5  kJ

c. 330 kJ

d. 3.3 × 10-4  kJ

e. 5.5 × 10-25  kJ