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Hard” water contains large amounts of metal ions, especially ions of calcium and magnesium, but also iron. Hard water is often described as having a metallic taste. These metal ions can form precipitates with some anions in the water. These precipitates c...

Does anyone have the multiple choice questions for lesson 9: unit 4: other worlds unit test (connections academy}

still am not getting the tension equation correct. also m2 is hanging down