60 ग्रॅम हेलियममध्ये किती मोल असतात?

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RRB ALP Previous Paper 18 (Held On: 29 Aug 2018 Shift 3)
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  1. 12 मोल
  2. 15 मोल
  3. 10 मोल
  4. 25 मोल

Answer (Detailed Solution Below)

Option 2 : 15 मोल
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  • हेलियमची संख्या (He) = 60 ग्रॅम 
  • आण्विक वस्तुमान म्हणजे एकूण प्रोटॉन आणि न्यूट्रॉनची बेरीज.
  • हेलियमचे आण्विक वस्तुमान = 2 × 2 = 4
  • आता आपल्याला मिळालेल्या मूलद्रव्यांसह वस्तुमानाचा गुणाकार करा = 4 × 1 = 4
  • एक मोल एकूण आण्विक वस्तुमानाच्या बरोबरीचा असतो.
  • आपल्याला माहीत आहे की एक मोल हेलियम रेणूच्या 4 ग्रॅम इतका असतो.
  • आता 60 ग्रॅम हेलियममध्ये असणारे मोल (n) = 60/4

n = 15 मोल

  • 60 ग्रॅम हेलियममध्ये 15 मोल असतात.
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