as Cao and Na2CO3, to sof 130 mg/L as CACO3. The ic Assume the lime is 90% pu

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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4-20
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4.20. Determine the lime and soda ash dose, in mg/L as CaO and Na2CO3, to soften the following water to a final hardness of less than 130 mg/L as CaCO3. The ion concentrations reported below are all mg/L as CaCO3. Assume the lime is 90% pure and the soda ash is 97% pure.

- Ca²⁺ = 210.0
- Mg²⁺ = 23.0
- HCO₃⁻ = 165.0
- CO₂ = 5.0

4.22. Determine the lime and soda ash dose, in mg/L as CaCO3, to soften the following water to a final hardness of less than 120.0 mg/L as CaCO3. If the price of lime, purchased as CaO, is $61.70 per megagram (Mg), and the price…

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Note: The text continues beyond what is visible. There are no graphs or diagrams accompanying this text.
Transcribed Image Text:**Transcription:** --- 4.20. Determine the lime and soda ash dose, in mg/L as CaO and Na2CO3, to soften the following water to a final hardness of less than 130 mg/L as CaCO3. The ion concentrations reported below are all mg/L as CaCO3. Assume the lime is 90% pure and the soda ash is 97% pure. - Ca²⁺ = 210.0 - Mg²⁺ = 23.0 - HCO₃⁻ = 165.0 - CO₂ = 5.0 4.22. Determine the lime and soda ash dose, in mg/L as CaCO3, to soften the following water to a final hardness of less than 120.0 mg/L as CaCO3. If the price of lime, purchased as CaO, is $61.70 per megagram (Mg), and the price… --- Note: The text continues beyond what is visible. There are no graphs or diagrams accompanying this text.
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The (inc and sodα ash does in Cab ond N to So tten ewolo ainal hesaness 2 3 Soda ash-) 97% Pu81e. dotor Sottening ng) as ok

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