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      Question

      What is the boiling point of pure water at normal

      atmospheric pressure (sea level)?
      A 50∘C . Correct Answer Incorrect Answer
      B 80∘C . Correct Answer Incorrect Answer
      C 90∘C . Correct Answer Incorrect Answer
      D 100∘C . Correct Answer Incorrect Answer

      Solution

      Pure water at normal atmospheric pressure (about 1 atmosphere at sea level) boils at 100∘C . At this temperature, water molecules have enough energy to escape from the liquid phase and form bubbles of vapor within the water, which rise to the surface and burst. This process is called boiling.

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