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
![**Question:**
2. How many grams are in 4.22 moles of Al₂(SO₄)₃?
**Explanation:**
This question requires the calculation of mass from moles for the compound aluminum sulfate, Al₂(SO₄)₃. In order to find the answer, you would need to use the molar mass of Al₂(SO₄)₃. By multiplying the number of moles by the molar mass (grams per mole), you can determine the total mass in grams.
**Steps for Solution:**
1. **Find the molar mass of Al₂(SO₄)₃**:
- Aluminum (Al): 26.98 g/mol
- Sulfur (S): 32.07 g/mol
- Oxygen (O): 16.00 g/mol
Molar mass of Al₂(SO₄)₃ = [2(26.98) + 3(32.07 + 4(16.00))] g/mol
2. **Calculate the mass**:
- Mass (g) = Moles × Molar mass
Substitute the values to find the final mass in grams.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F83c8383a-4f6c-43c1-8de7-aa7faa557af8%2F09f7b847-c1f3-4297-8dd9-02509db477ef%2Fs0h62s9_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Question:**
2. How many grams are in 4.22 moles of Al₂(SO₄)₃?
**Explanation:**
This question requires the calculation of mass from moles for the compound aluminum sulfate, Al₂(SO₄)₃. In order to find the answer, you would need to use the molar mass of Al₂(SO₄)₃. By multiplying the number of moles by the molar mass (grams per mole), you can determine the total mass in grams.
**Steps for Solution:**
1. **Find the molar mass of Al₂(SO₄)₃**:
- Aluminum (Al): 26.98 g/mol
- Sulfur (S): 32.07 g/mol
- Oxygen (O): 16.00 g/mol
Molar mass of Al₂(SO₄)₃ = [2(26.98) + 3(32.07 + 4(16.00))] g/mol
2. **Calculate the mass**:
- Mass (g) = Moles × Molar mass
Substitute the values to find the final mass in grams.
Expert Solution

Molecular mass
The molecular mass of anhydrous Alminium sulphate Al2(SO4)3 is 342.15 g/mol .
Therefore number of grams in one mole of Al2(SO4)3 is 342.15 g/mol
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