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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![### Question 3: How many atoms are in 46 g of bromine?
This question prompts students to calculate the number of atoms in a given mass of bromine (Br), specifically, 46 grams.
#### Steps to Solve:
1. **Determine Molar Mass of Bromine**:
- The atomic mass of bromine (Br) is approximately 79.904 grams per mole.
2. **Convert Mass to Moles**:
- Use the formula:
\[
\text{Moles of Bromine} = \frac{\text{Mass of Bromine}}{\text{Molar Mass of Bromine}}
\]
- Plug in the given values:
\[
\text{Moles of Bromine} = \frac{46 \text{ g}}{79.904 \text{ g/mol}}
\]
3. **Calculate Number of Atoms**:
- Use Avogadro's number \(6.022 \times 10^{23}\) atoms per mole to convert moles to number of atoms:
\[
\text{Number of Atoms} = \text{Moles of Bromine} \times 6.022 \times 10^{23} \text{ atoms/mole}
\]
By following these steps, students will determine the number of atoms in 46 grams of bromine.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1727c547-2849-418c-8c02-bad21df20f01%2F614a8419-8ddd-4280-9b51-800504a27776%2Fr8owzye_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Question 3: How many atoms are in 46 g of bromine?
This question prompts students to calculate the number of atoms in a given mass of bromine (Br), specifically, 46 grams.
#### Steps to Solve:
1. **Determine Molar Mass of Bromine**:
- The atomic mass of bromine (Br) is approximately 79.904 grams per mole.
2. **Convert Mass to Moles**:
- Use the formula:
\[
\text{Moles of Bromine} = \frac{\text{Mass of Bromine}}{\text{Molar Mass of Bromine}}
\]
- Plug in the given values:
\[
\text{Moles of Bromine} = \frac{46 \text{ g}}{79.904 \text{ g/mol}}
\]
3. **Calculate Number of Atoms**:
- Use Avogadro's number \(6.022 \times 10^{23}\) atoms per mole to convert moles to number of atoms:
\[
\text{Number of Atoms} = \text{Moles of Bromine} \times 6.022 \times 10^{23} \text{ atoms/mole}
\]
By following these steps, students will determine the number of atoms in 46 grams of bromine.
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