Question

How many moles are 5.55 x 102 atoms of Mg?
M2) an> NU X 02.0

Answer 1

Step-by-step explanation:

number of atoms = moles × avegadro number

so 5.55 × 10^2 = moles × 6.023 × 10^23

moles = 5.55 × 10^2 ÷ 6.023 × 10^23 = 9.214×10−22 moles