The forensic technician at a crime scene has just prepared a luminol stock solution by adding 15.0 g of luminol into a total volume of 75.0 mL of H3O. What is the molarity of the stock solution of luminol? Express your answer with the appropriate units. > View Available Hint(s) ? molarity of luminol solution = Value Units Submit Part B Before investigating the scene, the technician must dilute the luminol solution to a concentration of 6.00×10-2 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 Availahle Hintie)

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Part A
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 15.0 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.
Luminol has a molecular weight of 177 g/mol.
• View Available Hint(s)
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 6.00x10-2 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 2.00L of the diluted spray?
Express your answer with the appropriate units.
• View Available Hint(s)
µA
?
moles of luminol =
Value
Units
Submit
Transcribed Image Text:Part A 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 15.0 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. Luminol has a molecular weight of 177 g/mol. • View Available Hint(s) 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 6.00x10-2 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 2.00L of the diluted spray? Express your answer with the appropriate units. • View Available Hint(s) µA ? moles of luminol = Value Units Submit
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