Answer:
Below
Step-by-step explanation:
Find the number of moles of Zn...each mole is Avagadro's Number of atoms (6.022 x 10^23 )
From periodic table Zn = 65.38 g/mole
50 gm / 65.38 gm/mole ) = .765 mole
.765 mole * 6.022 x 10^23 = 4.61 x 10 ^23 atoms