1. Calculate the average titer (mg CaCO3/mL EDTA) for the three trials. P.S. Please do refer to the image attached to complete the calculation of this number. 2. A 30.0 mL portion of the water sample was titrated with the standardized EDTA solution. Total hardness was calculated for each of the three trials and summarized in the table below: Calculate the amount of titrant used in each trial to reach endpoint. Trial 1: Total Hardness - 1203.19 ppm Trial 2: Total Hardness - 1210.81 ppm Trial 3: Total Hardness - 1208.17 ppm 3.  Report total hardness of the sample as mean ±sd.

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Basic Chemical Calculations (Process and Variables)

A basic chemical calculation involves the application of the law of chemical proportions to various reactions and material and energy balance calculations on various chemical processes. Basic chemical calculation helps students analyze various chemical processes and develop problem-solving skills. The chemical manufacturing processes are divided into unit operations involving physical changes of material and unit processes involving the chemical transformation of materials. For instance, fluid flow, heat transfer, and mass transfer are unit operations, and oxidation, reduction, and pyrolysis are unit processes.