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Chemistry NMDCAT MCQs Moles and Avogadro's Numbers
nmdcat.online July 2, 2026

The mass of sodium chloride (NaCl) produced when 0.5 moles of sodium react completely with excess chlorine gas according to 2Na + Cl₂ → 2NaCl is (Na = 23, Cl = 35.5)

A. 58.5 g
B. 29.25 g
✓
C. 117 g
D. 14.625 g

📝 Explanation

The mole ratio Na : NaCl is 1:1. Therefore, 0.5 moles of Na produce 0.5 moles of NaCl. Mass = 0.5 × 58.5 = 29.25 g.

📖 Additional Information

  • 58.5 g
  • 29.25 g
  • 117 g
  • 14.625 g

The mole ratio Na : NaCl is 1:1. Therefore, 0.5 moles of Na produce 0.5 moles of NaCl. Mass = 0.5 × 58.5 = 29.25 g.

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