A water sample was tested for water hardness. A 50.00 mL sample, prepared and buffered to pH 10, required 23.55 mL of 0.0250 M EDTA. A second 50.00 mL aliquot, prepared with NaOH, was titrated with 14.53 mL of the same EDTA solution. a. Calculate the total hardness of the water sample, express in ppm CaCO3 b. Calculate the concentration of CaCO3 in the sample in ppm c. Calculate the concentration of MgCO3 in the sample in ppm

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Soil Compaction Test

Soil compaction is the major area of geotechnical engineering. Soil is composed of multiple pores present on its surface, while the soil is mainly composed of gravel, sand, rocks, etc. The arrangement of these rocks and gravels is such that they build up voids (spaces) between them, which allows spaces for the roots of the plants and crops to spread and absorb the required amount of nutrients. Soil compaction is a major problem primarily caused by human activities, micro-organisms, and other multiple factors.