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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![**5. Convert the 123 g of CaF₂ to moles.**
To convert grams to moles, use the formula:
\[ \text{Moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}} \]
1. **Identify the molar mass of CaF₂:**
- Calcium (Ca) has an atomic mass of approximately 40.08 g/mol.
- Fluorine (F) has an atomic mass of approximately 19.00 g/mol.
- CaF₂ = 40.08 g/mol + 2(19.00 g/mol) = 78.08 g/mol.
2. **Perform the conversion:**
- \[ \text{Moles of CaF₂} = \frac{123 \, \text{g}}{78.08 \, \text{g/mol}} \]
- \[ \text{Moles of CaF₂} \approx 1.575 \, \text{mol} \]
Therefore, 123 grams of CaF₂ is approximately 1.575 moles.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F022dcb38-39fc-49fc-a03d-f2e4f283ed6f%2F7bd18a81-c36d-4d2e-833b-019ae925282f%2Fgxelzg_processed.png&w=3840&q=75)
Transcribed Image Text:**5. Convert the 123 g of CaF₂ to moles.**
To convert grams to moles, use the formula:
\[ \text{Moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}} \]
1. **Identify the molar mass of CaF₂:**
- Calcium (Ca) has an atomic mass of approximately 40.08 g/mol.
- Fluorine (F) has an atomic mass of approximately 19.00 g/mol.
- CaF₂ = 40.08 g/mol + 2(19.00 g/mol) = 78.08 g/mol.
2. **Perform the conversion:**
- \[ \text{Moles of CaF₂} = \frac{123 \, \text{g}}{78.08 \, \text{g/mol}} \]
- \[ \text{Moles of CaF₂} \approx 1.575 \, \text{mol} \]
Therefore, 123 grams of CaF₂ is approximately 1.575 moles.
Expert Solution

Step 1
Given information is as follows:
The mass of = 123 g
The moles of a substance can be calculated as follows:
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