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A mixture of CaCO3 and MgCO3 weighing 1.00 g consumes 21.86 mL of 1N HCl, with...

A mixture of CaCO3 and MgCO3 weighing 1.00 g consumes 21.86 mL of 1N HCl, with methyl orange as indicator. One gram of this same sample is dissolved in HCl and diluted to one liter. 100 ml is consumed 21.87 mL of a solution of EDTA. EDTA solution with a water hardness is determined. 100 mL of water are taken and consumed 10 mL of EDTA. Express the hardness in ppm of Ca.

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ad mato cagte Caca ay) Caleiom

thank you very much

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