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1 degree Clarke = 1 part of CaCO3 per _____________ parts of water.

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in Engineering Chemistry II by (789k points)
1 degree Clarke = 1 part of CaCO3 per _____________ parts of water.

(a) 10,000

(b) 30,000

(c) 50,000

(d) 70,000

The question was asked by my college professor while I was bunking the class.

I'd like to ask this question from Hardness of Water topic in portion Water and its Treatment of Engineering Chemistry II

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The correct choice is (d) 70,000

To explain I would say: 1 degree Clarke = 1 part of CaCO3 per 70,000 parts of water. It is calculated mathematically.

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