Final answer:
The molar mass of Mg(CIO₄)₂ is calculated by adding the atomic mass of magnesium to twice the mass of the perchlorate ion, resulting in a molar mass of 223.21 g/mol.
Step-by-step explanation:
To calculate the molar mass of Mg(CIO₄)₂, we need to know the atomic masses of magnesium (Mg), chlorine (Cl), and oxygen (O). Here are the individual atomic masses required for the calculation:
- Mg = 24.31 g/mol
- Cl = 35.45 g/mol (approximately, may vary by source)
- O = 16.00 g/mol
Perchlorate, CIO₄, consists of one chlorine atom and four oxygen atoms, which totals:
Cl + 4 x O = 35.45 g/mol + 4 x 16.00 g/mol = 99.45 g/mol
Mg(CIO₄)₂ has one magnesium atom and two perchlorate anions:
Mg + 2 x CIO₄ = 24.31 g/mol + 2 x 99.45 g/mol = 223.21 g/mol
Thus, the correct molar mass of Mg(CIO₄)₂ is 223.21 g/mol.