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

Question

1)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.

Luminol has a molecular weight of 177 g/mol

Question: Before investigating the scene, the technician must dilute the luminol solution to a concentration of 5.00

Explanation / Answer

1) 0.100 mol

Arithmatic: x mol/2L = 5.00x10^-2M

x = 0.100

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