February 21, 2017

Homework Help: Chemistry

Posted by Irvin on Sunday, October 12, 2008 at 11:00am.

A. The forensic technician at a crime scene has just prepared a luminol stock solution by adding 13.0 g of luminol into a total volume of 75.0 mL of H2O.

-What is the molarity of the stock solution of luminol?

B. Before investigating the scene, the technician must dilute the luminol solution to a concentration of 5.00×10−2 \ 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?

What volume of the stock solution (Part A) would contain the number of moles present in the diluted solution (Part B)?


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