Answer:
Step-by-step explanation:
Molar mass Mg=24.3 grams per mole
Molar mass Cl=35.45 grams per mole
Molar mass O=15.99 grams per mole
Molar mass of 3Mg(ClO4)2=3(24.3g/mol)+2(35.45g/mol)+8(15.99g/mol)
=271.72g/mol
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