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What is the number of moles in 500 mL of a 2 M NaCl solution? (2023)

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Question: What is the number of moles in 500 mL of a 2 M NaCl solution? (2023)

Options:

  1. 1
  2. 0.5
  3. 2
  4. 0.25

Correct Answer: 1

Solution: 

Moles = Molarity x Volume (L) = 2 moles/L x 0.5 L = 1 mole.

What is the number of moles in 500 mL of a 2 M NaCl solution? (2023)

Practice Questions

Q1
What is the number of moles in 500 mL of a 2 M NaCl solution? (2023)
  1. 1
  2. 0.5
  3. 2
  4. 0.25

Questions & Step-by-Step Solutions

What is the number of moles in 500 mL of a 2 M NaCl solution? (2023)
  • Step 1: Understand that Molarity (M) is the number of moles of solute per liter of solution.
  • Step 2: Identify the given values: Molarity (2 M) and Volume (500 mL).
  • Step 3: Convert the volume from milliliters to liters. Since 1000 mL = 1 L, 500 mL = 0.5 L.
  • Step 4: Use the formula for moles: Moles = Molarity x Volume (in liters).
  • Step 5: Plug in the values: Moles = 2 moles/L x 0.5 L.
  • Step 6: Calculate the result: 2 x 0.5 = 1 mole.
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