Chemistry: Principles and Practice
Chemistry: Principles and Practice
3rd Edition
ISBN: 9780534420123
Author: Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher: Cengage Learning
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Chapter 7, Problem 7.100QE
Interpretation Introduction

Interpretation:

The power generated by the emitted light in an experiment has to be determined.

Concept Introduction:

The wave nature of any light can be described by its frequency, wavelength, and amplitude. The wavelength (λ, lambda) of the light is defined as the distance between two successive peaks. Its SI unit is meter. The frequency (v) is defined as the number of waves that can pass through the one point in 1 second. Its SI unit is s1. The amplitude (A) of the light wave is the maximum height of a wave.

The relation between frequency (v) and wavelength (λ) of the light is as follows:

  v=cλ        (1)

Here, c is the speed of light and its value is 3.00×108 m/s.

The relation between the energy (E) of a photon and frequency (v) is as follows:

  E=hv        (2)

Here, h is known as Plank’s constant and its value is 6.626×1034 Js.

The expression to calculate the power generated by the emitted photons in one second is as follows:

  Power(W)=(Number of photons)(Energy per photon(J))Time(sec)        (3)

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Chapter 7 Solutions

Chemistry: Principles and Practice

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