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?

Introductory Chemistry: A Foundation
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Chapter4: Chemical Foundations: Elements, Atoms, And Ions
Section: Chapter Questions
Problem 6QAP: Read the “Chemistry in Focus” segment Trace Elements: Small but Crucial, and answer the following...
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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?
Transcribed Image Text: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?
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