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9th Class Science Atoms and Molecules Question Bank 9th CBSE Science Atoms and Molecules

  • question_answer
      What is the fraction of the mass of water due to neutrons? 

    Answer:

      In water, number of neutrons = 0 x 2 + 8 = 8    Mass of 8 neutrons =8x1.00893 =8.07         [1/2] ( Mass of one neutron = 1.008934) Molar mass of water =1.008 x 2 + 16.0 = 18.016 u Fraction of mass due to neutrons


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