Water hardness is a measure of the concentration of calcium and magnesium ions. It affects soap effectiveness and can lead to scale buildup. Hard water is classified as temporary or permanent.
Write the chemical name and chemical formula of the salt used to remove permanent hardness of water.
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Sodium carbonate decahydrate has the chemical formula Na2CO3.10H2O, indicating that each formula unit of sodium carbonate is associated with 10 water molecules. This compound is commonly known as sodium carbonate decahydrate or sodium carbonate decahydrate.