A photon of ultraviolet (UV) light possesses enough energy...

A photon of ultraviolet (UV) light possesses enough energy to mutate a strand of human DNA. What is the energy of a single UV photon and a mole of UV photons having a wavelength of $25 \mathrm{~nm} ?$

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Key Concepts

Photon Energy (Planck's Equation)

This concept refers to the calculation of a photon's energy using the formula E = hc/?, where E is the energy of the photon, h is Planck's constant, c is the speed of light, and ? is the wavelength. It is fundamental in quantum mechanics for describing how energy is quantized in packets called photons.

Mole and Avogadro's Number

This concept involves understanding that a mole represents a quantity of 6.022 x 10^23 particles. It allows for scaling the energy or other properties from a single particle, such as a photon, to a macroscopic amount, enabling calculations for a mole of photons.

Unit Conversion and Scientific Notation

This concept highlights the importance of converting units accurately, such as converting wavelengths from nanometers to meters, to use them in physical equations. It also emphasizes the use of scientific notation, which is crucial for handling very large or very small numbers in physics and chemistry calculations.

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