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

  • question_answer
      How many moles are present in 4 g of sodium hydroxide?

    Answer:

                      Gram molar mass of NaOH =23 +16+1= 40 g 40g of NaOH = 1 mol 1g of NaOH 4 g of NaOH


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