A sample of hard water contains 20mg of ca ions per liter
A sample of hard water contains 20mg of Ca++ ions per liter. Explain how many milliequivalents of Na2Co3 would be required to soften 1 liter of sample?
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a sample of hard water contains 20mg of ca ions per liter explain how many milliequivalents of na2co3 would be required
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even the most inoffensive substances can become hazardous under the right circumstances multi-vitamins are commonly
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