To find the number of moles in 12g of Zn, we need to use the molar mass of zinc. The molar mass of Zn is approximately 65.38 g/mol. To calculate the number of moles, we divide the mass by the molar mass. So, 12g of Zn is equal to 12/65.38 ≈ 0.183 moles of Zn.
