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The two major cations that cause hardness are... |
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The name of the colorimetric test that measures hardness is called the _____ method. |
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The name of the color indicator used in the hardness test is... |
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The color change in the hardness test is from red to ... |
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When the hardness equals the alkalinity, the the type of hardness is called... |
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The protion of hardness that exceeds the alkalinity is called .... |
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The hardness that is removed by boiling is called... |
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The hardness that is not removed by boiling is called... |
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The ion that caused pseudo-hardness is... |
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The amount of chloride added by sewage to the carrier water is... |
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How many grams of chlorides per day are added by urine to sewage? |
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The two methods of analysis for chlorides are the... |
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Definition
Mohr method and the Mercuric Nitrate method |
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What is the recommended US public health limit for chlorides in drinking water? |
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Chlorides and _____ tests have been used to detect sewage contamination. |
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Hardness in water is health concern in drinking water. |
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Hardness in water causes hot water heaters to last longer. |
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Hardness in water causes more soap consumption. |
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Very soft water is preferable because it is likely more healthy than hard water. |
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