To calculate the molar mass of Na3PO4 (sodium phosphate), follow these steps:
1. **Identify the elements and their quantities in the compound:**
– Sodium (Na): 3 atoms
– Phosphorus (P): 1 atom
– Oxygen (O): 4 atoms
2. **Find the atomic masses of each element:**
– Sodium (Na): 22.99 g/mol
– Phosphorus (P): 30.97 g/mol
– Oxygen (O): 16.00 g/mol
3. **Multiply the atomic mass of each element by the number of atoms in the compound:**
– Sodium (Na): 3 × 22.99 g/mol = 68.97 g/mol
– Phosphorus (P): 1 × 30.97 g/mol = 30.97 g/mol
– Oxygen (O): 4 × 16.00 g/mol = 64.00 g/mol
4. **Add the results together to get the molar mass of Na3PO4:**
– 68.97 g/mol + 30.97 g/mol + 64.00 g/mol = 163.94 g/mol
So, the molar mass of Na3PO4 is **163.94 g/mol**.