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MNO2

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Manganese(IV) oxide is the compound with the formula MnO2. This blackish or brown solid occurs naturally as the mineral pyrolusite, which is the main ore of manganese and a component of manganese nodules.

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Description

water purification is the process of removing undesirable chemicals, biological contaminants, suspended solids and gases from contaminated water. The goal is to producewater fit for a specific purpose. … The standards for drinkingwater quality are typically set by governments or by international standards.

 

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