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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 7, Problem 46E
Textbook Problem
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Light from a fluorescent light source is analyzed and found to contain high intensities of light at the following wavelengths: 579 and 546 nm . What elements are present in the light tube?

Interpretation Introduction

Interpretation:

The element present in the given light tube is to be identified.

Concept Introduction:

Absorption spectroscopy is a technique of measuring the absorption of radiation. The color of any substance depends on the color of light absorbed by its molecules or atoms.

Absorption spectroscopy is very useful in distinguishing many chemical compounds from each other in a mixture.

The specificity of spectroscopy allows to identify unknown samples by comparing them with the reference spectra.

Explanation of Solution

Given information: Wavelengths of intensities of light are 579 and 546 nm.

In any substance, when atoms or molecules absorb a certain wavelength of light, they reflect the color of the light that is not absorbed. When an atom or molecule absorbs light, its electrons get excited from a lower energy level to a high energy level. During this, they release energy in the form of radiations. Spectroscopy studies the interaction of light with matter and is used to identify unknown substances.

The electromagnetic spectrum is the range of all types of radiations...

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Chapter 7 Solutions

Chemistry In Focus
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