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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![**Title: Calculating Mole Fraction and Molality**
**Instruction**
What is the mole fraction, \( X \), of solute and the molality, \( m \), for an aqueous solution that is 20.0% NaOH by mass?
**Input Fields:**
- \( m = \) [Text Box]
- \( X = \) [Text Box]
**Explanation:**
To solve for the mole fraction and molality:
1. Determine the mass of NaOH (solute).
2. Determine the mass of water (solvent).
3. Convert masses to moles.
4. Use the moles to calculate the mole fraction (moles of solute divided by total moles).
5. Calculate molality using moles of solute per kilogram of solvent.
**Note for Students:** Ensure you show all your work for full credit. Use the molar mass of NaOH and water in calculations.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ff2609b9a-bccc-4ea0-ab3c-7cfd8cf7907c%2F3559870d-b9fd-47fb-ad41-799951cb0fd5%2Fwxraaxm_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Title: Calculating Mole Fraction and Molality**
**Instruction**
What is the mole fraction, \( X \), of solute and the molality, \( m \), for an aqueous solution that is 20.0% NaOH by mass?
**Input Fields:**
- \( m = \) [Text Box]
- \( X = \) [Text Box]
**Explanation:**
To solve for the mole fraction and molality:
1. Determine the mass of NaOH (solute).
2. Determine the mass of water (solvent).
3. Convert masses to moles.
4. Use the moles to calculate the mole fraction (moles of solute divided by total moles).
5. Calculate molality using moles of solute per kilogram of solvent.
**Note for Students:** Ensure you show all your work for full credit. Use the molar mass of NaOH and water in calculations.
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