The U.S. Environmental Protection Agency (U.S. EPA) monitors air quality in the United States. Lead is among the pollutants regularly monitored and regulated. Lead is released into the at- mosphere primarily by the processing of metals ores containing lead and by lead-based battery manufacturing. The effects of too much exposure to lead include neurological damage and cardio- vascular disease. Because of the Clean Air Act and its amend- ments, the amounts of lead in air have been decreasing for many years. The chart below shows the lead concentration in air in the United States from 2000 to 2014. Examine the data and answer the questions below. Lead Concentration in Air in U.S. 0.35 0.30 0.25 0.20 0.15 0.10 £ 0.03 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 Year 100% 50%- 204 206 207 208 Mass (amu) How many lead atoms were in one cubic centimeter of air in 2011? Pb Concentration ug/m Intensity %

The U.S. Environmental Protection Agency (U.S. EPA) monitors air quality in the United States. Lead is among the pollutants regularly monitored and regulated. Lead is released into the at- mosphere primarily by the processing of metals ores containing lead and by lead-based battery manufacturing. The effects of too much exposure to lead include neurological damage and cardio- vascular disease. Because of the Clean Air Act and its amend- ments, the amounts of lead in air have been decreasing for many years. The chart below shows the lead concentration in air in the United States from 2000 to 2014. Examine the data and answer the questions below. Lead Concentration in Air in U.S. 0.35 0.30 0.25 0.20 0.15 0.10 £ 0.03 1998 2000 2002 2004 2006 2008 2010 2012 2014 2016 Year 100% 50%- 204 206 207 208 Mass (amu) How many lead atoms were in one cubic centimeter of air in 2011? Pb Concentration ug/m Intensity %

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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