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

  • question_answer
      Calculate the number of moles for the following. (a) 64 g of oxygen atom (b) 24.088 x 1021 number of oxygen atoms[Atomic mass of 0 = 16u]

    Answer:

      16 g of oxygen atoms = 1 mole of oxygen atom 64 e of oxygen atoms = ??? = 4 moles (b) 6.022 x1023 atoms of oxygen = 1 mole of oxygen atoms [1 /2]  24.088 x l021 atoms of oxygen moles


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