The Mineral Pyrolusite Is a Compound of Manganese-55 and Oxygen-16

question 107

Multiple Choice

The mineral pyrolusite is a compound of manganese-55 and oxygen-16. If 63% of the mass of pyrolusite is due to manganese, what is the empirical formula of pyrolusite?

• A)MnO
• B)Mn₂O
• C)Mn₂O₂
• D)MnO₂
• E)none of these

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