1.

C-12 and C-14 isotopes are found as 98% and 2% respectively in any sample. Number of atoms of C-14 in 12 g of sample will be

Answer»

1.5 MOLE ATOMS
`1.03 xx 10^22` atoms
`3.06 xx 10^22` atoms
`3.08 xx 10^23 ` atoms

Solution :No. of C attoms of C -14 in 12g of sample
` = (12 xx 2)/(100 xx 14) xx 6.02 xx 10^23 =1.032 xx 10^22`


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