Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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
Transcribed Image Text:### Constants needed for the calculations:
- \( c = 3.00 \times 10^8 \, \text{meters/second} \)
- Planck's Constant (\( h \)) = \( 6.63 \times 10^{-34} \, \text{joules seconds} \)
- \( n_f = 2 \)
### Table of Wavelengths and Calculations:
| | Red Light | Green Light | Blue Light | Violet Light |
|----------------------|---------------|---------------|---------------|---------------|
| **Wavelength (nm)** | 656.2 nm | 486.1 nm | 434.0 nm | 410.0 nm |
| **Wavelength (m)** | | | | |
| **ΔE (J)** | | | | |
| **\( n_i \)** | | | | |
#### Explanation:
This table presents wavelengths for different colors of light:
- **Red Light**: 656.2 nanometers (nm)
- **Green Light**: 486.1 nanometers (nm)
- **Blue Light**: 434.0 nanometers (nm)
- **Violet Light**: 410.0 nanometers (nm)
### To Be Calculated:
1. **Wavelength (m)**: Convert the wavelength from nanometers (nm) to meters (m).
2. **ΔE (J)**: Calculate the energy difference using the given constants.
3. **\( n_i \)**: Determine initial quantum number based on given final quantum number (\( n_f = 2 \)).
### Conversion and Calculation Steps:
1. **Convert Wavelength (nm) to Wavelength (m)**:
- \( \text{Wavelength (m)} = \text{Wavelength (nm)} \times 10^{-9} \)
2. **Calculate Energy (ΔE in J)** using the formula:
- \( \Delta E = h \times \frac{c}{\text{Wavelength (m)}} \)
3. **Determine Initial Quantum Number (\( n_i \))**:
- Use appropriate quantum mechanical equations to find \( n_i \) based on energy levels and \( n_f \).
This structured information helps students understand the relationships between wavelength, energy, and quantum numbers
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