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What is the mass of 0.5 moles of NaCl?

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Question: What is the mass of 0.5 moles of NaCl?

Options:

  1. 29 g
  2. 58 g
  3. 14 g
  4. 0.5 g

Correct Answer: 29 g

Solution: 

Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol. Mass = moles x molar mass = 0.5 moles x 58.5 g/mol = 29.25 g.

What is the mass of 0.5 moles of NaCl?

Practice Questions

Q1
What is the mass of 0.5 moles of NaCl?
  1. 29 g
  2. 58 g
  3. 14 g
  4. 0.5 g

Questions & Step-by-Step Solutions

What is the mass of 0.5 moles of NaCl?
Correct Answer: 29.25 g
  • Step 1: Find the molar mass of NaCl. Sodium (Na) has a mass of 23 g/mol and Chlorine (Cl) has a mass of 35.5 g/mol.
  • Step 2: Add the masses of Sodium and Chlorine together: 23 g/mol + 35.5 g/mol = 58.5 g/mol.
  • Step 3: Use the formula to find the mass: Mass = moles x molar mass.
  • Step 4: Substitute the values into the formula: Mass = 0.5 moles x 58.5 g/mol.
  • Step 5: Calculate the mass: 0.5 x 58.5 = 29.25 g.
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