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

  • question_answer
      Calculate the number of molecules in 4 g of methane. [Atomic mass of C = 12 u, H = 1u]

    Answer:

      Molar mass of methane = 12 + 4 x 1= 16 g 16 g ofcontains 6.022 x 1023 molecules 4 g of will contain ??= 1.5055 x1023 molecules     


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