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.

Luminol has a molecular weight of 177

What is the molarity of the stock solution of luminol?

2).

g/mol

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 The forensic technician at a crime scene has just prepared a luminol stock solution by adding 20.0 of luminol into a total volume of 75.0 mL of H 2 O . What is the molarity of the stock solution of luminol? What volume of the stock solution (Part A) would contain the number of moles present in the diluted solution (Part B)? Express your answer with the appropriate units.

Explanation / Answer

Part B

moles of luminol present in 2.00 L of diluted solution= 6.00

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