Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question

I need help finding the %Composition for %cychohexane and %toluene. The formula (area of peak/total area) * 100%

The image is a chromatogram, which is a type of graph used in analytical chemistry to separate and analyze compounds that can be vaporized. This chromatogram appears to represent data from a gas chromatograph, which measures the presence of different substances in a sample over time. ### Graph Details: - **X-Axis (Horizontal):** - Labeled as "min," indicating the time in minutes. - Data points are marked approximately at intervals of 0.1 minutes, ranging from 0.0 to 1.0 minutes. - **Y-Axis (Vertical):** - Labeled as "pA," which stands for picoamperes, a unit of electrical current that measures the detector's response to the compounds. - The scale ranges from 0 to 800,000 picoamperes. ### Key Features: - **Peaks:** - Peaks indicate the presence of different substances within the sample. Each peak corresponds to a specific component that is eluted at different times. - The peaks have specific values written next to them: - At approximately 0.421 min and 0.487 min, smaller peaks are observed. - A significant peak occurs at 0.550 min, reaching nearly 750,000 pA. - Another notable peak is at 0.575 min. - Lesser peaks appear at approximately 0.637 min and 0.689 min. - **Title and Additional Information:** - The graph is identified with the title "FID1 A, Front Signal (NO SAMPLE NAME (FRONT) 2020-05-16 19:34-09.D)." - "FID" likely refers to the Flame Ionization Detector, a common type of detector used in gas chromatography. ### Interpretation: The chromatogram provides information on the elution profile of various compounds found within the sample. The height and area under each peak can be indicative of the concentration of each component. The exact identity of each substance would normally require comparison to known standards.
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Transcribed Image Text:The image is a chromatogram, which is a type of graph used in analytical chemistry to separate and analyze compounds that can be vaporized. This chromatogram appears to represent data from a gas chromatograph, which measures the presence of different substances in a sample over time. ### Graph Details: - **X-Axis (Horizontal):** - Labeled as "min," indicating the time in minutes. - Data points are marked approximately at intervals of 0.1 minutes, ranging from 0.0 to 1.0 minutes. - **Y-Axis (Vertical):** - Labeled as "pA," which stands for picoamperes, a unit of electrical current that measures the detector's response to the compounds. - The scale ranges from 0 to 800,000 picoamperes. ### Key Features: - **Peaks:** - Peaks indicate the presence of different substances within the sample. Each peak corresponds to a specific component that is eluted at different times. - The peaks have specific values written next to them: - At approximately 0.421 min and 0.487 min, smaller peaks are observed. - A significant peak occurs at 0.550 min, reaching nearly 750,000 pA. - Another notable peak is at 0.575 min. - Lesser peaks appear at approximately 0.637 min and 0.689 min. - **Title and Additional Information:** - The graph is identified with the title "FID1 A, Front Signal (NO SAMPLE NAME (FRONT) 2020-05-16 19:34-09.D)." - "FID" likely refers to the Flame Ionization Detector, a common type of detector used in gas chromatography. ### Interpretation: The chromatogram provides information on the elution profile of various compounds found within the sample. The height and area under each peak can be indicative of the concentration of each component. The exact identity of each substance would normally require comparison to known standards.
The table provides detailed chromatographic data on various peaks detected in a sample analysis. Here's a breakdown of the columns and values: - **Peak #**: Identifies the peak number, ranging from 1 to 10. - **RetTime [min]**: The retention time in minutes, indicating when each peak was detected. - **Type**: The identification of the peak by a code (e.g., BV, VV S, VV X). - **Width [min]**: The width of each peak in minutes. - **Area [pA*s]**: The area under the peak, measured in picoampere-seconds, reflecting the quantity of the component. - **Height [pA]**: The height of each peak in picoamperes, indicating the peak's intensity. - **Area %**: The percentage of the total area contributed by each peak. For example, Peak #1 has a retention time of 0.309 minutes, is identified as type "BV," with a width of 0.0230 minutes, an area of 5211.08594 pA*s, a height of 3045.64087 pA, and it accounts for 0.21782% of the total area. At the bottom of the table, totals for the area and height are provided: - **Total Area [pA*s]**: 2.39237e6 - **Total Height [pA]**: 1.81062e6 This data is typically used to quantify and identify compounds in a mixture based on their chromatographic properties.
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Transcribed Image Text:The table provides detailed chromatographic data on various peaks detected in a sample analysis. Here's a breakdown of the columns and values: - **Peak #**: Identifies the peak number, ranging from 1 to 10. - **RetTime [min]**: The retention time in minutes, indicating when each peak was detected. - **Type**: The identification of the peak by a code (e.g., BV, VV S, VV X). - **Width [min]**: The width of each peak in minutes. - **Area [pA*s]**: The area under the peak, measured in picoampere-seconds, reflecting the quantity of the component. - **Height [pA]**: The height of each peak in picoamperes, indicating the peak's intensity. - **Area %**: The percentage of the total area contributed by each peak. For example, Peak #1 has a retention time of 0.309 minutes, is identified as type "BV," with a width of 0.0230 minutes, an area of 5211.08594 pA*s, a height of 3045.64087 pA, and it accounts for 0.21782% of the total area. At the bottom of the table, totals for the area and height are provided: - **Total Area [pA*s]**: 2.39237e6 - **Total Height [pA]**: 1.81062e6 This data is typically used to quantify and identify compounds in a mixture based on their chromatographic properties.
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% composition for Cyclohexane and toluene

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