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Call Stack
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Call Stack
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10.0003267280{main}( )../index.php:0
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Call Stack
#TimeMemoryFunctionLocation
10.0003267280{main}( )../index.php:0
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30.217413212848Zend_Controller_Dispatcher_Standard->dispatch( )../Front.php:954
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Call Stack
#TimeMemoryFunctionLocation
10.0003267280{main}( )../index.php:0
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#TimeMemoryFunctionLocation
10.0003267280{main}( )../index.php:0
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Call Stack
#TimeMemoryFunctionLocation
10.0003267280{main}( )../index.php:0
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Call Stack
#TimeMemoryFunctionLocation
10.0003267280{main}( )../index.php:0
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Call Stack
#TimeMemoryFunctionLocation
10.0003267280{main}( )../index.php:0
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Call Stack
#TimeMemoryFunctionLocation
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Call Stack
#TimeMemoryFunctionLocation
10.0003267280{main}( )../index.php:0
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Esercizi sui trattamenti delle acquein Tecnologia Dei Materiali E Chimica Applicata - Docsity.com

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Call Stack
#TimeMemoryFunctionLocation
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Esercizi sui trattamenti delle acque

Esercitazioni E Esercizi, Tecnologia Dei Materiali E Chimica Applicata

Invia: 27 luglio 2010
Descrizione
esercitazione chimica applicata
esercitazione chimica applicata
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Esercizi sui trattamenti delle Acque 1. Calcolare le concentrazioni degli ioni Mg2+ e Ca2+ (in ppm) in un’acqua la cui concentrazione di HCO3- è pari a 85,4 ppm e la cui durezza è stata abbattuta aggiungendo in 2 m3 della stessa acqua 148 e 360,4 g di Ca(OH)2 e Na2CO3, rispettivamente. 2. Un' acqua ha durezza permanente di 14°f e in essa la concentrazione degli ioni Mg2+ e Ca2+ è pari rispettivamente a 4,86 ppm e 48,10 ppm. Calcolare il quantitativo di calce e di soda necessario per abbattere in 8 m3 di acqua la durezza totale. 3. Un’acqua ha durezza totale di 35 °f e in essa la concentrazione degli ioni HCO3- e Mg++ vale rispettivamente 185 e 22 ppm. Calcolare il quantitativo di calce e di soda necessario per abbattere in 10 m3 di acqua il 90 % della durezza totale ed il quantitativo di Na3PO4*12H2O per abbattere la durezza residua. 4. Un’acqua priva di ioni magnesio ha durezza totale di 40 °f e durezza permanente di 15 °f. Calcolare la concentrazione in parti per milione..

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