Carbon has two stable isotopes; 12c (98.93%) and 13c (1.07%). how many atoms of 13c would there be in a 2.05 g sample of carbon dioxide?

There are atoms of 13-C present in a 2.05 grams sample of carbon dioxide.

Explanation:

Percentage of 12-C isotope = 98.93%

Percentage of 13-C isotope = 1.07%

Mass of the sample of carbon dioxide = 2.05 g

Mass of 13-C in the sample = 1.07% of 2.05 g

Molar mass of 13-C isotope = 13 g/mol

Moles of 13-C =

atoms/ molecules

Atoms of 13-C in 0.001687 moles:

atoms

There are atoms of 13-C present in a 2.05 grams sample of carbon dioxide.

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