Exam 19: Fundamentals of Spectrophotometry

A 3.7 × 10⁻⁴ M solution of compound X has an absorbance of 0.5342 when measured at 740 nm.Assuming a pathlength of 1 cm,calculate compound X's molar absorptivity.

(Multiple Choice)

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Question 21

Which of the following is NOT true for the absorption of light?

(Multiple Choice)

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Question 22

A red laser emits a pulse of light every 10 s.If the laser operates at a wavelength of 695 nm and 50 W,calculate the number of photons emitted during a pulse.(1 W = 1 J/s)

(Short Answer)

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Question 23

Showing 21 - 23 of 23

A 3.7 × 10⁻⁴ M solution of compound X has an absorbance of 0.5342 when measured at 740 nm.Assuming a pathlength of 1 cm,calculate compound X's molar absorptivity.

Which of the following is NOT true for the absorption of light?

A red laser emits a pulse of light every 10 s.If the laser operates at a wavelength of 695 nm and 50 W,calculate the number of photons emitted during a pulse.(1 W = 1 J/s)

The Analytical Process

Chemical Measurements

Tools of the Trade

Experimental Error

Statistics

Quality Assurance and Calibration Methods

Chemical Equilibrium

Let the Titrations Begin

Activity and the Systematic Treatment of Equilibrium

Monoprotic Acid-Base Equilibria

Polyprotic Acid-Base Equilibria

Acid-Base Titrations

Edta Titrations

Advanced Topics in Equilibrium

Fundamentals of Electrochemistry

Electrodes and Potentiometry

Redox Titrations

Electroanalytical Techniques

Applications of Spectrophotometry

Spectrophotometers

Atomic Spectroscopy

Mass Spectrometry

Introduction to Analytical Separations

Gas Chromatography

High-Performance Liquid Chromatography

Chromatographic Methods and Capillary Electrophoresis

Gravimetric and Combustion Analysis

Sample Preparation

Filters

Exam 19: Fundamentals of Spectrophotometry

A 3.7 × 10−4 M solution of compound X has an absorbance of 0.5342 when measured at 740 nm.Assuming a pathlength of 1 cm,calculate compound X's molar absorptivity.

Which of the following is NOT true for the absorption of light?

A red laser emits a pulse of light every 10 s.If the laser operates at a wavelength of 695 nm and 50 W,calculate the number of photons emitted during a pulse.(1 W = 1 J/s)

The Analytical Process

Chemical Measurements

Tools of the Trade

Experimental Error

Statistics

Quality Assurance and Calibration Methods

Chemical Equilibrium

Let the Titrations Begin

Activity and the Systematic Treatment of Equilibrium

Monoprotic Acid-Base Equilibria

Polyprotic Acid-Base Equilibria

Acid-Base Titrations

Edta Titrations

Advanced Topics in Equilibrium

Fundamentals of Electrochemistry

Electrodes and Potentiometry

Redox Titrations

Electroanalytical Techniques

Applications of Spectrophotometry

Spectrophotometers

Atomic Spectroscopy

Mass Spectrometry

Introduction to Analytical Separations

Gas Chromatography

High-Performance Liquid Chromatography

Chromatographic Methods and Capillary Electrophoresis

Gravimetric and Combustion Analysis

Sample Preparation

Filters

A 3.7 × 10⁻⁴ M solution of compound X has an absorbance of 0.5342 when measured at 740 nm.Assuming a pathlength of 1 cm,calculate compound X's molar absorptivity.