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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 43E
Textbook Problem
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Absorption of Light and Spectroscopy

Light from a yellow streetlamp is analyzed and found to consist of 589 nm light. What element is present within the lamp? ( Hint: Use Table 7 .1 . )

Interpretation Introduction

Interpretation:

The element present within the given lamp is to be identified.

Concept Introduction:

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

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

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

Explanation of Solution

Given information: Wavelength of light is 589 nm.

In any substance, when atoms or molecules absorb certain wavelengths of light, they reflect the color of the light which is not absorbed. When an atom or molecule absorbs light, the electrons get excited from a lower energy level to a high energy level, during which they release the energy in the form of radiation. Spectroscopy is the interaction of light with matter and is used to identify an unknown substance...

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Chapter 7 Solutions

Chemistry In Focus
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