The red lasers used to read the barcodes of products at the grocery stores produce light with a wavelength of 633 nm. Determine the energy, in units of joules, for a single photon produced by such a laser.
The red lasers used to read the barcodes of products at the grocery stores produce light with a wavelength of 633 nm. Determine the energy, in units of joules, for a single photon produced by such a laser.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:The red lasers used to read the barcodes of products at the grocery stores produce light witha wavelength of 633 nm. Determine the
energy, in units of joules, for a single photon produced by such a laser.
The electrical power consumption of a single grocery store laser is 5.00000 x 103js%. If the laser is left on continuously for 365 days,
what is the total amount of energy it emits as light? Assume that the laser works at 100% efficiency (i.e. all the electrical energy is
converted to 633 nm light).
If SaskPower is burning CH4 gas (methane) to produce electricity, how many moles of CH4 must be burned to produce enough energy to
run the grocery store laser for 365 days? The heat of combustion of methane is -890 kJ/mol. Assume the combustion energy is
converted to electricity with 100% efficiency. (Hint: Your answer from Part 2 will be required in this calculation).
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