**Part 1** The electron in a hydrogen atom is initially located in the shell where n=1. **(A)** The hydrogen atom is illuminated with radiation that has a wavelength of 97.2 nm. What is the energy (in J) of a single photon from that radiation? **(B)** After absorbing the photon described in (A), the electron becomes excited and travels from n=1 to another shell. After this transition, the electron is in the shell where n=_____ (Show all your work for (A) and (B)) **Part 2** In Part 1, the electron in the hydrogen atom left n=1 after absorbing a photon. In which direction did the electron travel? - a) towards the nucleus - b) away from the nucleus - c) into the nucleus

What is the energy (in J) of a photon with a frequency of 7.23 × 10¹⁴ s⁻¹? (h = 6.626 × 10⁻³⁴ J • s)

2. A laser pointer used in the classroom emits light at 6550 A, at a power of 4.00 mW. (One watt is the SI unit of power, the measure of energy per unit of time. 1 W = 1 J/s). How many photons are emitted from the pointer in 115 seconds?

What is the wavelength (in nm) of a photon if the energy is 5.51 × 10⁻¹⁹ J? (h = 6.626 × 10⁻³⁴ J • s

What is the energy (in J) of a mole of photons that have a wavelength of 515 nm? (h= 6.626 x 1034 Js and c = 3.00 x 108 m/s)

Determine the energy of a photon, in J, with a wavelength of 294 nm. (h = 6.626 × 10⁻³⁴ J • s and c = 3.00 × 10⁸ m/s) What is the energy (in J) of a mole of photons that have a wavelength of 681 nm? (h = 6.626 × 10⁻³⁴ J • s and c = 3.00 × 10⁸ m/s)

Microwave ovens heat food by the energy given off by microwaves. These microwaves have a wavelength of 5.00 3 106 nm. (a) How much energy in kilojoules per mole is given off by a microwave oven? (b) Compare the energy obtained in (a) with that given off by the ultraviolet rays (l <100 nm) of the Sun that you absorb when you try to get a tan.

What is the energy (in J) of a mole of photons that have a wavelength of 503 nm? (h = 6.626 × 10⁻³⁴ J • s and c = 3.00 × 10⁸ m/s)