Question

How many atoms are in 0.00125 moles of zinc

Answer 1

One mole of anything is 6.022*10^23 of that thing. so just multiply 6.022*10^23 by 0.00125 to find your answer. 

Answer 2

Each mole has
`6.022 *10^(23)` atoms.

`(1)/(8)* 10^(-2)*6.022* 10^(23) = 7.5* 10^(20)` atoms