Before investigating the scene, the technician must dilute the luminol solution to a concentration of 4.00×10−2M . The diluted solution is then placed in a spray bottle for application on the desired surfaces.

How many moles of luminol are present in 2.00 L of the diluted spray?

mols = M x L = ?

To calculate the number of moles of luminol present in the diluted spray, we'll use the formula:

moles = concentration (in M) x volume (in L)

Given:
Concentration of luminol solution = 4.00×10^(-2) M
Volume of the diluted spray = 2.00 L

Substituting these values into the formula:

moles = 4.00×10^(-2) M x 2.00 L

moles = 8.00×10^(-2) mol

Therefore, there are 8.00×10^(-2) moles of luminol present in 2.00 L of the diluted spray.