Question

How many moles of arsenic atoms are in 3.2 x 1021 atoms of arsenic?

Answer 1

to convert atoms to moles, we need Avogadro's number (1 mol= 6.02 x 10²³ atoms)


`3.2 x10^(21) atoms ((1 mol Arsenic)/(6.02x10^(23) atoms) )= 0.00532 mol Arsenic`