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

  • question_answer
                  Calculate the molar mass of the following substances: (a) Ethyne, (b) Sulphur molecule, (c) Phosphorus molecule,  (Atomic mass of phosphorus =31) (d) Hydrochloric acid, HCl (e) Nitric acid,       

    Answer:

                      (a) Ethyne, (b) Sulphur molecule, (c) Phosphorus molecule, (d) Hydrochloric acid, (e) Nitric acid,  


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