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Tom [10]
3 years ago
7

The forensic technician at a crime scene has just prepared a luminol stock solution by adding 15.0 gg of luminol into a total vo

lume of 75.0 mLmL of H2OH2O. What is the molarity of the stock solution of luminol? Express your answer with the appropriate units.
Chemistry
1 answer:
Firdavs [7]3 years ago
6 0

Answer:

1.13 M

Explanation:

Given data

  • Mass of luminol (solute): 15.0 g
  • Volume of solution = volume of water = 75.0 mL = 0.0750 L
  • Molar mass of luminol: 177.16 g/mol

The molarity of the stock solution of luminol is:

M = mass of solute / molar mass of solute × liters of solution

M = 15.0 g / 177.16 g/mol × 0.0750 L

M = 1.13 M

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