Constants | Periodic Tabl The forensic technician at a crime scene has just prepared a luminol stock solution by adding 17.0 g of luminol into a total volume of 75.0 mL of H2 O. 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. What is the molarity of the stock solution of luminol? Express your answer with the appropriate units. • View Available Hint(s) Luminol has a molecular weight of 177 g/mol. HA molarity of luminol solution = Value Units Submit Part B Before investigating the scene, the technician must dilute the luminol solution to a concentration of 2 00 10 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. • View Available Hint(s)

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* Molarity
116 of 147
Constants | Periodic Table
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.
The forensic technician at a crime scene has just prepared a luminol stock solution by adding 17.0 g of
luminol into a total volume of 75.0 mL of H2O.
What is the molarity of the stock solution of luminol?
Express your answer with the appropriate units.
• View Available Hint(s)
Luminol has a molecular weight of 177 g/mol.
HẢ
molarity of luminol solution =
Value
Units
Submit
Part B
Before investigating the scene, the technician must dilute the luminol solution to a concentration of 2.00×102
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.
• View Available Hint(s)
P Pearson
围
acer
Transcribed Image Text:* Molarity 116 of 147 Constants | Periodic Table 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. The forensic technician at a crime scene has just prepared a luminol stock solution by adding 17.0 g of luminol into a total volume of 75.0 mL of H2O. What is the molarity of the stock solution of luminol? Express your answer with the appropriate units. • View Available Hint(s) Luminol has a molecular weight of 177 g/mol. HẢ molarity of luminol solution = Value Units Submit Part B Before investigating the scene, the technician must dilute the luminol solution to a concentration of 2.00×102 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. • View Available Hint(s) P Pearson 围 acer
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