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Eloise Upton

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Cards in this guide (3)
What equation is used to calculate the energy of a photon

Energy = hc/λ

h = Planck's constant (6.626 × 10-34 m2 kg/s)

c = the speed of light (3.00 × 108 m/s)

λ = the wavelength

Example question: What is the energy of a photon with a wavelength of 700 nm?

Convert the wavelength to meters (1 nm = 10-9 m)

700 nm = 700 × 10-9 m

Energy = (6.626 × 10-34)(3.00 × 108) ÷ (700 × 10-9) = 2.84 × 10-19 J

What does it mean for heat to be transferred by thermal conduction

Energy is transferred when one molecule collides with another.

What does the latent heat of vaporization represent

The amount of energy required to turn a mole of a liquid into a gas

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