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NCERT Class XI Chemistry Some Basic Concepts of Chemistry Solutions

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Question : 30 of 36
Marks: +1, -0
What will be the mass of one  12C\,{}^{12}\mathrm{C} atom in g?
Solution:  
1 mol of  12C\,{}^{12}\mathrm{C} = 6.022 × 102310^{23} atoms = 12 gThus, 6.022 × 102310^{23} atoms of  12C\,{}^{12}\mathrm{C} = 12 gMass of one atom of  12C\,{}^{12}\mathrm{C} = 126.022×1023\frac{12}{6.022 \times 10^{23}} = 1.9926935 × 10−2310^{-23} g
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