Answer to Question #291270 in General Chemistry for jumah

Question

One mole is the amount of any given chemical substance that helps us to measure it's mass conveniently on a scale of C¹² Isotope.

How many particles (atoms of carbon) are present in 12 g of C¹² isotope of a naturally occuring sample of carbon.

Answer 1

Mass of Carbon = 12 g .

Moles of Carbon =

mass of carbon / Atomic mass of carbon .

Moles of Carbon = 12 / 12 = 1 mol .

Number of atoms of carbon =

Moles of carbon × Avogadro number .

Number of atoms of carbon =

1 × N = 6.02 × 10²³ atoms . ANSWER .