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MDCAT Chemistry QUESTION #7825
Question 1

Molar heat of vaporization of water is:

  • 40.7 cal/mol
  • 40.7 J/mol
  • 40.7 kcal/mol
  • 40.7 kJ/mol✔️
Correct Answer Explanation

ΔH_vap of water at 100°C ≈ 40.7 kJ/mol (or 9.7 kcal/mol). 40.7 kcal/mol would be too high.