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2g of a dry soil was mixed vigorously with 200mL of 0.5M ammonium acetate solution. After filtration the ions concentrations in the filtrate were determined

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2g of a dry soil was mixed vigorously with 200mL of 0.5M ammonium acetate solution. After filtration the ions concentrations in the filtrate were determined as follows: Mg2+=24.5g/mL,Mg:24g/mol Determine the Mg2+CEC of the soil in the unit of cmol/kg ? For the toolbar, press ALT+F10(PC) or ALT+FN+F10 (Mac)

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