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Q: What is the approximate molecular weight of common salt?
  • A. 14 g/mol
  • B. 28 g/mol
  • C. 117 g/mol
  • D. 58 g/mol
Correct Answer: Option D - The formula of common salt is NaCl. The molecular weight of sodium (Na) = 22.98 and the molecular weight of chlorine (Cl) = 35.45 Hence the molecular weight of common salt (NaCl) = 22.98 + 35.45 = 58.43
D. The formula of common salt is NaCl. The molecular weight of sodium (Na) = 22.98 and the molecular weight of chlorine (Cl) = 35.45 Hence the molecular weight of common salt (NaCl) = 22.98 + 35.45 = 58.43

Explanations:

The formula of common salt is NaCl. The molecular weight of sodium (Na) = 22.98 and the molecular weight of chlorine (Cl) = 35.45 Hence the molecular weight of common salt (NaCl) = 22.98 + 35.45 = 58.43