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JEE Main Chemistry question

ChemistrySome Basic Concepts of ChemistryJEE Main

The isotopic abundance of C-12 and C-14 is 98% and 2% respectively. What would be the number of C-14 isotope atoms in a 12 g carbon sample?

Answer: (A)

Solution

Average atomic mass . Moles in 12 g mol, total atoms .

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Question ID VK-130804