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

  • question_answer
      Find the ratio by mass of the combining elements in the following compounds. (a)                            (b) (c)                            (d) (e)                                (f)

    Answer:

          (a) Ca: S : 0 =40 : 32 : 48 = 5 : 4 : 6 (b) Mg : Cl = 24:71 (c) H : S :O = 2 : 32 : 64 = 1 : 16 : 32 (d) C : H :O = 24 : 6 : 16 = 12 : 3 : 8 (e) N : H = 14 : 3 (f) Ca : O : H = 40 : 32 : 2 = 20 : 16 : 1 


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