Question

You perform the lab and make a graph of the absorbance versus concentration in Excel. The graph in Excel has the equation: y = 18.4 x 0.0144 What is the concentration of a compound that has an absorbance of 0.570 if this is the equation of the line

Answer 1

To determine the concentration of a compound with an absorbance of 0.570 using the equation of the line in Excel (y = 18.4x 0.0144), we can rearrange the equation to solve for x (concentration). The equation can be rewritten as:

0.570 = 18.4x 0.0144

To isolate x, we can subtract 0.0144 from both sides of the equation:

0.570 - 0.0144 = 18.4x

0.5556 = 18.4x

Now, divide both sides of the equation by 18.4 to solve for x:

0.5556 / 18.4 = x

x ≈ 0.0302

Therefore, the concentration of the compound with an absorbance of 0.570, based on the given equation, is approximately 0.0302.