What is the energy (in J) of a mole of photons that have a wavelength of 651 nm? (h = 6.626 × 10⁻³⁴ J • s and c = 3.00 × 10⁸ m/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?

The scattering of sunlight by the mixture of gas molecules in air results in the blue color of the sky. Calculate the energy (in Joules) of a single photon of blue light with a frequency of 7.50 × 1014 Hz. (h = 6.626 x 10-34 J•s) |x 10 49 J 2 3 4 5 C 7 8. +/- х 100

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

Determine the energy of a photon with a wavelength of 361 nm. (h = 6.626 × 10⁻³⁴ J • s and c = 3.00 × 10⁸ m/s)

A certain microwave oven delivers 750 watts (J/s) of power to a coffee cup containing 66.6 g of water at 37.5°C. If the wavelength of microwaves in the oven is 9.75 cm, how long does it take, and how many photons must be absorbed, to make the water boil? The specific heat capacity of water is 4.18 J/ °C•g and assume only the water absorbs the energy of the microwaves. S photons

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)

A photon of radiation has a frequency of 4.64 x 108 Hz. Calculate its wavelength (in nm) and energy in J

When the electron moves from n=5 to n=2, what is the frequency of light emitted by that electron? (c= wavelength symbol x v)

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