Question

Sample Concentration
(ppm)
Absorbance
Blank
Standard 1
Standard 2
Standard 3
Standard 4
Standard 5
Soil sample
0.00
1.00
2.00
3.00
4.00
5.00
x (unknown)
0.00
0.17
0.34
0.48
0.65
0.83
0.58
what is the value of x

Answer 1

To find the value of x (unknown concentration in the soil sample), we can create a standard curve using the absorbance values of the standards and their known concentrations.

Using the data provided:
Standard concentrations (ppm): 1.00, 2.00, 3.00, 4.00, 5.00
Absorbance values: 0.17, 0.34, 0.48, 0.65, 0.83

Plotting the standard concentrations on the x-axis and the absorbance values on the y-axis, we can create a standard curve.

Next, we can determine the unknown concentration in the soil sample by finding its absorbance value (0.58) on the standard curve and then using the curve to find the corresponding concentration.

Once you find the corresponding concentration for an absorbance of 0.58, you would have the value of x.