1. Identify the Elements and Their Atomic Masses
* Cu (Copper): 63.55 g/mol
* S (Sulfur): 32.06 g/mol
* O (Oxygen): 16.00 g/mol
* H (Hydrogen): 1.01 g/mol
2. Calculate the Mass of Each Component
* CuSO₄: (63.55 + 32.06 + (16.00 x 4)) = 159.61 g/mol
* 5H₂O: (5 x (2 x 1.01 + 16.00)) = 90.05 g/mol
3. Add the Masses Together
* CuSO₄·5H₂O: 159.61 g/mol + 90.05 g/mol = 249.66 g/mol
Therefore, the formula mass of CuSO₄·5H₂O is 249.66 g/mol.
