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

  • question_answer
      How many atoms would be present in a black dot marked on the paper with graphite pencil as a full stop at the end of a sentence. [Given mass of a dot ]

    Answer:

                      1 mole of carbon atoms weigh = 12 g Also,    1 mole of carbon atoms = 6.022 x 1023 atoms Thus, 12 g of carbon atoms has 6.022 x 1023 atoms. of carbon will have carbon atoms = 5.02 x 104 carbon atoms.


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