Calculate the ppt and ppm of argon gas in a mixture containing 20.0 g of argon and 60.0 g of helium gas. Be sure to answer all parts. Enter your answer in scientific notation. x 10 (select) Ppt x 10 (select) Ppm

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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**Exercise: Calculating Parts Per Thousand (ppt) and Parts Per Million (ppm) of Argon Gas**

**Problem Statement:**

Calculate the ppt and ppm of argon gas in a mixture containing 20.0 g of argon and 60.0 g of helium gas. Be sure to answer all parts. Enter your answer in scientific notation.

**Inputs:**
- Argon: 20.0 g
- Helium: 60.0 g

**Instructions:**

1. __Calculate the total mass of the gas mixture.__

   Total mass = Mass of Argon + Mass of Helium

2. __Determine the mass fraction of argon.__

   Mass fraction = (Mass of Argon) / (Total Mass of Mixture)

3. __Convert the mass fraction to ppt and ppm.__

   - **Parts Per Thousand (ppt):** Multiply the mass fraction by 10³.
   - **Parts Per Million (ppm):** Multiply the mass fraction by 10⁶.

4. __Provide the answers in scientific notation.__

**Answer Inputs:**
- __ppt:__ Enter the value in the first box, then select the appropriate power of ten from the dropdown.
- __ppm:__ Enter the value in the second box, then select the appropriate power of ten from the dropdown.

**Navigation:**
- Move through the exercise pages using the "Prev" and "Next" buttons at the bottom.

**Note:** Ensure the calculated values are entered correctly in scientific notation format for both ppt and ppm.
Transcribed Image Text:**Exercise: Calculating Parts Per Thousand (ppt) and Parts Per Million (ppm) of Argon Gas** **Problem Statement:** Calculate the ppt and ppm of argon gas in a mixture containing 20.0 g of argon and 60.0 g of helium gas. Be sure to answer all parts. Enter your answer in scientific notation. **Inputs:** - Argon: 20.0 g - Helium: 60.0 g **Instructions:** 1. __Calculate the total mass of the gas mixture.__ Total mass = Mass of Argon + Mass of Helium 2. __Determine the mass fraction of argon.__ Mass fraction = (Mass of Argon) / (Total Mass of Mixture) 3. __Convert the mass fraction to ppt and ppm.__ - **Parts Per Thousand (ppt):** Multiply the mass fraction by 10³. - **Parts Per Million (ppm):** Multiply the mass fraction by 10⁶. 4. __Provide the answers in scientific notation.__ **Answer Inputs:** - __ppt:__ Enter the value in the first box, then select the appropriate power of ten from the dropdown. - __ppm:__ Enter the value in the second box, then select the appropriate power of ten from the dropdown. **Navigation:** - Move through the exercise pages using the "Prev" and "Next" buttons at the bottom. **Note:** Ensure the calculated values are entered correctly in scientific notation format for both ppt and ppm.
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