Before investigating the scene, the technician must dilute the luminol solution to a concentration of 4.00×10−2 . 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?

answered above.

To find the number of moles of luminol present in 2.00 L of the diluted spray, we need to use the given concentration of the solution.

The molarity (M) of a solution is defined as moles (n) of solute divided by the volume (V) of the solution in liters:

M = n/V

Rearranging this equation, we have:

n = M * V

Given that the concentration (M) of the diluted solution is 4.00×10^−2 (meaning 4.00 * 10^(-2) M) and the volume (V) is 2.00 L, we can substitute these values into the equation to calculate the number of moles (n) of luminol:

n = (4.00×10^−2 M) * (2.00 L)