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Questions asked by users might not always be phrased in the clearest way.
To find the concentration of compound X in the sample, you can use the standard addition method. Here's how:
1. Plot the data: Plot the peak area (y-axis) against the volume of standard X added (x-axis).
2. Find the intercept: Extend the line of best fit to the y-axis. The intercept represents the peak area that would be observed if no standard was added.
3. Calculate the unknown concentration: The slope of the line represents the change in peak area per unit volume of standard added. Use the equation:
`Concentration of X in sample = (Intercept / Slope)
Concentration of standard`
This will give you the concentration of compound X in the original 50.0 mL sample.