photon has a frequency of 7.3 * 10-17 Hz. Planck's constant is 6.63 * 10-34 J•s. The energy of the photon, to the nearest tenths place, is * 10-50 J.

The energy of the photon can be calculated using one of the following two rules:

Rule 1: E = hf where h is Planck's constant and f is the frequency

Rule 2: E = (hc) / lambda where h is Planck's constant, c is the speed of light and lambda is the wavelength.

We are given that:

Planck's constant (h) = 6.63 * 10^-34 Js

frequency (f) = 7.3 * 10^-17 Hz

Based on these givens, we will use Rule 1.

Substitute with the givens in Rule 1 to get the energy as follows:

E = hf

E = 6.63 * 10^-34 * 7.3 * 10^-17

E = 4.8 * 10^-50 Joules