Calculate the magnitude of the energy of the photon associated with light of wavelength 6057.8 Å

Answer: \( E \approx 3.29 \times 10^{-19} \, \text{J} \)

Explanation: The energy of a photon can be calculated using the formula:

\[ E = \frac{hc}{\lambda} \]

where:

  • \( E \) is the energy of the photon,
  • \( h \) is Planck’s constant (\( 6.626 \times 10^{-34} \, \text{J s} \)),
  • \( c \) is the speed of light (\( 3.00 \times 10^8 \, \text{m/s} \)),
  • \( \lambda \) is the wavelength in meters.

First, convert the wavelength from angstroms to meters:

\[ 6057.8 \, \text{Å} = 6057.8 \times 10^{-10} \, \text{m} \]

Now, substitute the values into the energy formula:

\[ E = \frac{(6.626 \times 10^{-34} \, \text{J s})(3.00 \times 10^8 \, \text{m/s})}{6057.8 \times 10^{-10} \, \text{m}} \]

Calculating this gives:

\[ E \approx 3.29 \times 10^{-19} \, \text{J} \]