Question

Daphne generates a graph with an equation of y = 18.34x + 0.0010. If the [Cu²+] = 0.0125 M, what is the absorbance (Abs)?

A. Abs = 18.34[0.0125] + 0.0010
B. Abs = 18.34 * 0.0125 - 0.0010
C. Abs = 0.0125 / 18.34 + 0.0010
D. Abs = 0.0010 - 18.34[0.0125]

Answer 1

The absorbance can be calculated using the given equation and the concentration of Cu²+. The absorbance is 0.226.

Step-by-step explanation:

The equation given to us is y = 18.34x + 0.0010. We are given the concentration of Cu²+, which is 0.0125 M. To find the absorbance (Abs), we substitute the concentration value into the equation and solve.

Abs = 18.34 * 0.0125 + 0.0010

Abs = 0.225 + 0.0010

Abs = 0.226

Therefore, the absorbance (Abs) is 0.226.