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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![### Educational Content: Practice Question on Oxides of Nitrogen
**Topic:** Compounds and Molecular Formulas
**Question:**
An oxide of nitrogen contains 30.45 mass % N and has a molar mass of 92.02 g/mol. What is the molecular formula?
**Options:**
- NO₅
- N₃O₂
- N₄O₂
- NO₂
- N₂O₄ (Correct answer)
**Explanation:**
To determine the molecular formula, consider the given data:
1. **Percentage Composition:** 30.45% of the compound’s mass is nitrogen (N).
2. **Molar Mass:** The compound has a molar mass of 92.02 g/mol.
The correct formula, N₂O₄, satisfies these conditions when accounting for the atomic weights of nitrogen and oxygen:
- Nitrogen (N) has an atomic weight of approximately 14.01 g/mol.
- Oxygen (O) has an atomic weight of approximately 16.00 g/mol.
By applying these weights to the given options, N₂O₄ matches the specified conditions, confirming it as the correct answer.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F70e8efb5-ae80-46e2-83fa-b6d76d3562dd%2F15951842-350d-4040-bb6c-295f5b93eaa4%2Fpg2s5we_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Educational Content: Practice Question on Oxides of Nitrogen
**Topic:** Compounds and Molecular Formulas
**Question:**
An oxide of nitrogen contains 30.45 mass % N and has a molar mass of 92.02 g/mol. What is the molecular formula?
**Options:**
- NO₅
- N₃O₂
- N₄O₂
- NO₂
- N₂O₄ (Correct answer)
**Explanation:**
To determine the molecular formula, consider the given data:
1. **Percentage Composition:** 30.45% of the compound’s mass is nitrogen (N).
2. **Molar Mass:** The compound has a molar mass of 92.02 g/mol.
The correct formula, N₂O₄, satisfies these conditions when accounting for the atomic weights of nitrogen and oxygen:
- Nitrogen (N) has an atomic weight of approximately 14.01 g/mol.
- Oxygen (O) has an atomic weight of approximately 16.00 g/mol.
By applying these weights to the given options, N₂O₄ matches the specified conditions, confirming it as the correct answer.
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