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Vaselesa [24]
3 years ago
14

Problems 307 How many milliliters of a 2.5 M NaCl solution would be needed to prepare each solution? a. 1.5L of a 0.75m solution

​
Chemistry
1 answer:
mafiozo [28]3 years ago
5 0

Answer:

450 mL

Explanation:

First we <u>calculate how many NaCl moles would there be in 1.5 L of a 0.75 M solution</u>, using the <em>definition of molarity</em>:

  • Molarity = moles / Liters
  • Moles = Molarity * Liters
  • Moles = 1.5 L * 0.75 M =1.125 mol

Once again using the <em>definition of molarity</em>, we now <u>calculate how many liters of a 2.5 M solution would have 1.125 moles</u>:

  • Liters = 1.125 mol / 2.5 M = 0.45 L

Finally we <u>convert 0.45 liters to mL</u>:

  • 0.45 L * 1000 = 450 mL
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