Atomic mass of Nitrogen is 14 and that of Hydrogen is 1 . What will be the molecular mass of Ammonia?

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RRB ALP CBT I 17 Aug 2018 Shift 2 Official Paper
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  1. 17
  2. 18
  3. 15
  4. 16

Answer (Detailed Solution Below)

Option 1 : 17
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Detailed Solution

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The correct answer is 17.

Key Points

  • Given:
    • The atomic mass of Nitrogen is 14 and that of Hydrogen is 1
  • Hence, The molecular mass of NH3 = ( 1 × 14 ) + ( 3 × 1 )
    • Molecular mass of  NH3 = 17 gm/mole

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