Question

if isotopic distribution of C12 and c14 is 98% and 2% , then the number of C - 12 atoms in 14g of carbon is​

Answer 1

Answer:

Explanation:

Weight of Carbon = 14g

Molecular weight of C¹² = 12g/mol

∴ number of mole = 14g/12g/mol = 7/6 mol

Number of carbon atoms = mole × Avogadro's number

=> 7/6 × 6.023 × 10²³

=> 7.026 × 10²³

∵ occurrence of C¹² = 98 %

So, number of C¹² atoms = 7.026 × 10²³ × 98/100

=> 6.886 × 10²³

Hence, number of C¹² atoms = 6.886 × 10²³ .............