A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: CoH Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas. >View Available Hint(s)
A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: CoH Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas. >View Available Hint(s)
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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![**Transcription of Educational Text and Interactive Elements:**
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**Understanding Percent Composition:**
Percent composition refers to the mass percent of each element in a compound.
**Formula:**
\[ \text{mass percent} = \left( \frac{\text{mass of element}}{\text{mass of compound}} \right) \times 100\% \]
**Example:**
For water (\( \text{H}_2\text{O} \)), the percent composition is:
- 11.2% hydrogen, as it comprises mass from 2 hydrogen atoms.
- 88.8% oxygen, from the single oxygen atom.
**Note:** The periodic table can be useful when performing these calculations. Access it by clicking the "Tools" link in the upper right corner of the page.
---
**Interactive Exercise:**
**Part A:**
A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: \( \text{C}_3\text{H}_8 \).
- Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas.
**Input Box:**
- **Field 1:** carbon, hydrogen _______ %
**Buttons:**
- Submit
- Previous Answers
---
**Part B:**
A certain metal hydroxide, \( \text{M}(\text{OH})_2 \), contains 32.8% oxygen by mass. What is the identity of the metal \( \text{M} \)?
- Enter the full name of the element.
**End of Page Information:**
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Transcribed Image Text:**Transcription of Educational Text and Interactive Elements:**
---
**Understanding Percent Composition:**
Percent composition refers to the mass percent of each element in a compound.
**Formula:**
\[ \text{mass percent} = \left( \frac{\text{mass of element}}{\text{mass of compound}} \right) \times 100\% \]
**Example:**
For water (\( \text{H}_2\text{O} \)), the percent composition is:
- 11.2% hydrogen, as it comprises mass from 2 hydrogen atoms.
- 88.8% oxygen, from the single oxygen atom.
**Note:** The periodic table can be useful when performing these calculations. Access it by clicking the "Tools" link in the upper right corner of the page.
---
**Interactive Exercise:**
**Part A:**
A hydrocarbon is a compound that contains mostly carbon and hydrogen. Calculate the percent composition (by mass) of the following hydrocarbon: \( \text{C}_3\text{H}_8 \).
- Enter the percentages of carbon and hydrogen numerically to four significant figures, separated by commas.
**Input Box:**
- **Field 1:** carbon, hydrogen _______ %
**Buttons:**
- Submit
- Previous Answers
---
**Part B:**
A certain metal hydroxide, \( \text{M}(\text{OH})_2 \), contains 32.8% oxygen by mass. What is the identity of the metal \( \text{M} \)?
- Enter the full name of the element.
**End of Page Information:**
- Copyright © 2021 Pearson Education Inc. All rights reserved.
- Terms of Use | Privacy Policy | Permissions | Contact Us
**Weather Note:** 88°F Mostly cloudy - 3:22 PM
---
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