The chemical 5-amino-2,3-dihydro-1,4- phthalazinedione, better known as luminol,

Question

The chemical 5-amino-2,3-dihydro-1,4- phthalazinedione, better known as luminol, is used by forensic scientists in analyzing crime scenes for the presence of washed-away blood. Luminol is so sensitive that it can detect blood that has been diluted 10,000 times. A basic solution of luminol is often sprayed onto surfaces that are suspected of containing minute amounts of blood. Part B Before investigating the scene, the technician must dilute the luminol solution to a concentration of 3.00x102 M. 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? Express your answer with the appropriate units. Hints Luminol has a molecular weight of 177 g/mol. moles of luminol = alue Units Submit My Answers Give Up

Explanation / Answer

part B)

Molarity = 3.00 x 10^-2 M

volume = 2 L

Molarity = moles / volume

3.00 x 10^-2 = moles / 2

moles = 0.06 mol

moles of luminol present = 0.0600 mol

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