Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN: 9781259696527
Author: J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher: McGraw-Hill Education
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Question
**Problem Statement:** Calculate the energy associated with a radiation having a wavelength of 3000 Å. Give the answer in kcal mol⁻¹ and also in kJ mol⁻¹. **Explanation:** - **Wavelength (λ):** 3000 Å (angstroms). - **Energy Calculation:** Use the formula \( E = \frac{hc}{λ} \) where \( h \) is Planck's constant and \( c \) is the speed of light. - **Unit Conversion:** Convert the energy from ergs to joules and then to kcal mol⁻¹ and kJ mol⁻¹. **Note:** There are no graphs or diagrams associated with this question.
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Transcribed Image Text:**Problem Statement:** Calculate the energy associated with a radiation having a wavelength of 3000 Å. Give the answer in kcal mol⁻¹ and also in kJ mol⁻¹. **Explanation:** - **Wavelength (λ):** 3000 Å (angstroms). - **Energy Calculation:** Use the formula \( E = \frac{hc}{λ} \) where \( h \) is Planck's constant and \( c \) is the speed of light. - **Unit Conversion:** Convert the energy from ergs to joules and then to kcal mol⁻¹ and kJ mol⁻¹. **Note:** There are no graphs or diagrams associated with this question.
Expert Solution
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Step 1

given, wavelength,λ= 3000 A0 =3000×10-8 cm

        speed of light, c =  3×1010cm/s

1 kcal = 4.185 x 1010 ergs

1 Kcal = 4.18 kj

 

 

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