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MHT CET202415 May 2024Morning ShiftChemistrySome Basic Concepts of ChemistryActual

What is the percentage by mass of oxygen in NaOH ? (Atomic mass of Na =23 u , O =16 u , H =1 u )

Options

  1. A16
  2. B20
  3. C40
  4. D60

Correct answer

C. 40

Step-by-step solution

aligned % O by mass & = Atomic weight of oxygen Molecular weight of NaOH 100 & = 16 40 100=40 % aligned

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