2. Calculate the CEC of two soils (prairie and forest) assuming that barium (Ba") acetate was used to replace all the cations on the soils exchange sites and the barium acetate was replaced with CaCi. If 5 gram of cach soil was used and the Ba" concentration in 250 ml (0.250 L) of the final extruct was found to be 400 mg BuL for the prairie soil and 240 mg BuL for the forest soil, caleulate the CEC for each soil.

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Introduction to Engineering Design

Students are often confused with engineering and design. The term engineering design has two words with different meanings, engineering, and design. The term engineering implies applications of laws and principles of science to design and analyze physical structures and components. In civil engineering, students apply the concept of physics and chemistry to design and build structures and buildings. In engineering disciplines, the term design means determining the dimensions, loads, and associated influences on the component due to the applied loads such as stresses and deformations. The estimation of such parameters is crucial to make the component or structure foolproof.