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NCERT Class XI Chemistry Some Basic Concepts of Chemistry Solutions

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Question : 30
Total: 36
What will be the mass of one
12
‌
C atom in g?
Solution:  
1 mol of
12
‌
C = 6.022 × 1023 atoms = 12 gThus, 6.022 × 1023 atoms of
12
‌
C = 12 gMass of one atom of
12
‌
C =
12
6.022×1023
 = 1.9926935 × 10−23 g
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