Use the averages of the replicate absorbance measurements to determine the slope

Question

Use the averages of the replicate absorbance measurements to determine the slope and y-intercept of the best-fit straight line. Predict the Fe^2+ concentration in an unknown sample that has an absorbance of 0.126. What is the uncertainty associated with the predicted Fe^2+ concentration? For part, use a graphing calculator or the SLOPE and INTERCEPT functions of Excel to calculate the slope and y-intercept. Use the averages of the replicate absorbance measurements (see below) in the calculations.

Explanation / Answer

A) m= 0.0076

b= -0.0032

The equation is y= 0.0076x -0.0032

B)

0.126= 0.0076 x -0.0032

x= 17 uM

C) sorry i´m not sure about this part

Related Questions

Navigate

• Browse (All)
• Browse U
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.