What experimental technique should you use to determine the density of an unknown substance? O measurements of mass & volume O calorimetry O titration O spectrometry
What experimental technique should you use to determine the density of an unknown substance? O measurements of mass & volume O calorimetry O titration O spectrometry
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 Resource: Determining the Density of an Unknown Substance
#### Question:
**What experimental technique should you use to determine the density of an unknown substance?**
#### Options:
- **Measurements of mass & volume**
- **Calorimetry**
- **Titration**
- **Spectrometry**
### Explanation:
To determine the density of an unknown substance, you should use **measurements of mass & volume**. This method involves the following steps:
1. **Measure the Mass**: Use a balance to determine the mass of the substance accurately.
2. **Measure the Volume**: Depending on the state of the substance (solid, liquid, or gas), use an appropriate method such as displacement of water (for solids) or a graduated cylinder (for liquids).
3. **Calculate Density**: Use the formula:
\[
\text{Density} = \frac{\text{Mass}}{\text{Volume}}
\]
### Related Techniques:
- **Calorimetry**: This method measures the amount of heat absorbed or released during a chemical reaction, physical change, or phase transition. It is not used to measure density.
- **Titration**: Involves the gradual addition of a solution of known concentration to a solution of unknown concentration until the reaction reaches completion. It is used to determine concentration, not density.
- **Spectrometry**: Technique used to measure the amount of light absorbed by a sample at different wavelengths. This is often used for identifying elements or compounds and measuring concentrations, but not for determining density.
Each of these techniques serves its own purpose and is used in different contexts within scientific experiments and determinations. For density specifically, accurate measurements of mass and volume are essential.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7053a473-1d58-4c55-9472-40482d1da2f4%2F95237b38-d9f7-4312-b5a3-4365e5d2609c%2Faqi9u3n_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Educational Resource: Determining the Density of an Unknown Substance
#### Question:
**What experimental technique should you use to determine the density of an unknown substance?**
#### Options:
- **Measurements of mass & volume**
- **Calorimetry**
- **Titration**
- **Spectrometry**
### Explanation:
To determine the density of an unknown substance, you should use **measurements of mass & volume**. This method involves the following steps:
1. **Measure the Mass**: Use a balance to determine the mass of the substance accurately.
2. **Measure the Volume**: Depending on the state of the substance (solid, liquid, or gas), use an appropriate method such as displacement of water (for solids) or a graduated cylinder (for liquids).
3. **Calculate Density**: Use the formula:
\[
\text{Density} = \frac{\text{Mass}}{\text{Volume}}
\]
### Related Techniques:
- **Calorimetry**: This method measures the amount of heat absorbed or released during a chemical reaction, physical change, or phase transition. It is not used to measure density.
- **Titration**: Involves the gradual addition of a solution of known concentration to a solution of unknown concentration until the reaction reaches completion. It is used to determine concentration, not density.
- **Spectrometry**: Technique used to measure the amount of light absorbed by a sample at different wavelengths. This is often used for identifying elements or compounds and measuring concentrations, but not for determining density.
Each of these techniques serves its own purpose and is used in different contexts within scientific experiments and determinations. For density specifically, accurate measurements of mass and volume are essential.
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