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hw1ees3040fa10 - EES 3040 Introduction to Environmental...

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EES 3040: Introduction to Environmental Engineering Homework 1 Concentrations and Mass Balance Due Thursday, 9.02.10 at 1:15 pm Reading Assignment st nd edition) D&M1: Ch 1, pp. 2-13; Ch 2, pp. 62-67, 77-78; Ch 3, pp. 88-93, 97-101 D&M2: Ch 1, pp. 2-12; Ch 2, pp. 66-69, 79-80; Ch 4, pp. 134-136, 143-147 Problems (30 points maximum) 1. a.) (3 pts.) A lake in Ohio that has a surface area of 7.1 hectares and depth of 8.3 m is acidic due to acid deposition (acid rain). If 85 kg of sulfate (SO 4 2- ) is deposited via acid deposition into the lake, determine the aqueous concentration of sulfate in mg/L. (Unit conversion factors are on the back cover of the text.) b.) (3 pts.) Assuming that the lake water has the same density as pure water (dilute sulfate concentration), express this sulfate concentration in the following units: (i) ppm; (ii) ppb; and (iii) ug/L (micrograms per liter). 2.
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This note was uploaded on 10/29/2011 for the course EES 3040 taught by Professor Chan-hilton during the Fall '10 term at FSU.

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