60 గ్రా హీలియంలో ఎన్ని మోల్స్ ఉన్నాయి?

This question was previously asked in
RRB ALP Previous Paper 18 (Held On: 29 Aug 2018 Shift 3)
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  1. 12 మోల్స్
  2. 15 మోల్స్
  3. 10 మోల్స్
  4. 25 మోల్స్

Answer (Detailed Solution Below)

Option 2 : 15 మోల్స్
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  • హీలియం గ్రాముల సంఖ్య (He) = 60 గ్రా
  • పరమాణు ద్రవ్యరాశి అనేది మొత్తం ప్రోటాన్లు మరియు న్యూట్రాన్ల మొత్తం.
  • హీలియం యొక్క పరమాణు ద్రవ్యరాశి = 2 × 2 = 4
  • ఇప్పుడు మనకు లభించే అనేక మూలకాలతో ద్రవ్యరాశిని గుణించండి = 4 × 1 = 4
  • ఒక మోల్ అణువు యొక్క మొత్తం ద్రవ్యరాశికి సమానం.
  • ఒక మోల్ 4 గ్రాముల హీలియం అణువుకు సమానమని మనకు తెలుసు.
  • ఇప్పుడు 60 గ్రాముల హీలియంలోని మోల్స్ సంఖ్య (n) = 60/4
  • n = 15 మోల్స్

    • 60 గ్రాముల మోల్స్ సంఖ్య 15 మోల్స్.
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