Identify the Salts That Are in Hard Water

question 30

Multiple Choice

Identify the salts that are in hard water.

• A) CaCO₃ and MgCO₃
• B) MgSO₄ and CaSO₄
• C) NaCl and KBr
• D) KHSO₄ and Na₂SO₄
• E) NaOCl and HOCl

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