Question: 21. A water sample from the Brazos River at Brenham was collected and analyzed by PVAMU students for water quality characteristics. The following data was

21. A water sample from the Brazos River at Brenham was collected and analyzed by PVAMU students for water quality characteristics. The following data was reported on the chemical analysis. The temperature and pH of the water are 25C and 7.2, respectively. Estimate the ionic strength of the solution and the activity coefficients for each of the ions Ion Conc. Ion Conc. mg/L mg/L Ca 2 190 HCO3 260 Mgt2 84 S04-2 64 Na 75 CO3-2 30 0.1 Cl 440 Cd 2 0.2 NO3-1 35 Fe+2

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