नाइट्रोजन गैस (N 2 ) के 0.5 मोल का द्रव्यमान कितना होता है? | Mathematics MCQ [Updated November 2026] | GkGet

Mathematics · Mole Concept

नाइट्रोजन गैस (N₂) के 0.5 मोल का द्रव्यमान कितना होता है?

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14 ग्राम

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