To determine the gram atomic mass of ZnCO3 (zinc carbonate), we need to calculate the sum of the atomic masses of all the atoms in one molecule of ZnCO3.
The atomic masses of the elements involved are as follows:
- Zinc (Zn): 65.38 g/mol
- Carbon (C): 12.01 g/mol
- Oxygen (O): 16.00 g/mol (there are three oxygen atoms in ZnCO3)
Now, let's calculate the gram atomic mass of ZnCO3:
Gram atomic mass of ZnCO3 = (atomic mass of Zn) + (atomic mass of C) + (3 * atomic mass of O) = 65.38 g/mol + 12.01 g/mol + (3 * 16.00 g/mol) = 65.38 g/mol + 12.01 g/mol + 48.00 g/mol = 125.39 g/mol
Therefore, the gram atomic mass of ZnCO3 (zinc carbonate) is approximately 125.39 g/mol.