Water softeners often replace calcium ions in hard water withsodium ions. Because sodium compounds are soluble, thepresence of sodium ions in water does not cause the white,scaly residues caused by calcium ions. However, calcium ismore beneficial to human health than sodium because calciumis a necessary part of the human diet, while high levels ofsodium intake are linked to increases in blood pressure. TheU.S. Food and Drug Administration (FDA) recommends thatadults ingest less than 2.4 g of sodium per day. How manyliters of softened water, containing a sodium concentration of0.050% sodium by mass, does a person have to consume toexceed the FDA recommendation? (Assume a water density of1.0 g>mL.)
Water softeners often replace calcium ions in hard water withsodium ions. Because sodium compounds are soluble, thepresence of sodium ions in water does not cause the white,scaly residues caused by calcium ions. However, calcium ismore beneficial to human health than sodium because calciumis a necessary part of the human diet, while high levels ofsodium intake are linked to increases in blood pressure. TheU.S. Food and Drug Administration (FDA) recommends thatadults ingest less than 2.4 g of sodium per day. How manyliters of softened water, containing a sodium concentration of0.050% sodium by mass, does a person have to consume toexceed the FDA recommendation? (Assume a water density of1.0 g>mL.)
Chemistry: An Atoms First Approach
2nd Edition
ISBN:9781305079243
Author:Steven S. Zumdahl, Susan A. Zumdahl
Publisher:Steven S. Zumdahl, Susan A. Zumdahl
Chapter10: Properties Of Solutions
Section: Chapter Questions
Problem 129CP: In some regions of the southwest United States, the water is very hard. For example, in Las Cruces,...
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Question
Water softeners often replace calcium ions in hard water with
sodium ions. Because sodium compounds are soluble, the
presence of sodium ions in water does not cause the white,
scaly residues caused by calcium ions. However, calcium is
more beneficial to human health than sodium because calcium
is a necessary part of the human diet, while high levels of
sodium intake are linked to increases in blood pressure. The
U.S. Food and Drug Administration (FDA) recommends that
adults ingest less than 2.4 g of sodium per day. How many
liters of softened water, containing a sodium concentration of
0.050% sodium by mass, does a person have to consume to
exceed the FDA recommendation? (Assume a water density of
1.0 g>mL.)
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