Assume that 50,000 yd3of the soil from the borrow pit is to be delivered to an embankment at a construction site. By the time it reaches the site, due to evaporation, the water content is 9%. This soil will be compacted to the maximum dry density. Determine the total amountofwater (inlb) that must be added to the soilto increase the moisture content to the optimum level.

the mass of the cathode increases because ions from the solution get reduced to atoms and become part of the cathode.

explanation:

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the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

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