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adding 22.5 g of sodium fluoride per 1.0 × 103 gallons of water, what is the concentration of fluoride anion (hint: NOT the concentration of sodium fluoride) in that water in units of ppm? Note: 1 gallon = 4.5461 L and the density of water is 1.00 g/mL.

adding 22.5 g of sodium fluoride per 1.0 × 103 gallons of water, what is the concentration of fluoride anion (hint: NOT the concentration of sodium fluoride) in that water in units of ppm? Note: 1 gallon = 4.5461 L and the density of water is 1.00 g/mL.

Chemistry
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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I'm don't understand how to solve for just fluoride anion

Question Type: Application. This question is related to material presented in Board 8.1. Fluoride is often added to drinking water supplies by local utility companies, because, according to the Center for Disease Control and Prevention (CDC), “Drinking fluoridated water keeps teeth strong and reduces cavities (also called tooth decay) by about 25% in children and adults. By preventing cavities, community water fluoridation has been shown to save money both for families and for the US health care system." A common way to add fluorine to drinking water is through dissolving sodium fluoride in carefully controlled amounts. If a local utility company fluorinates their tap water by adding 22.5 g of sodium fluoride per 1.0 × 10³ gallons of water, what is the concentration of fluoride anion (hint: NOT the concentration of sodium fluoride) in that water in units of ppm? Note: 1 gallon = 4.5461 L and the density of water is 1.00 g/mL. Report only the numerical part of your answer in units of "ppm fluoride," rounded to the hundredths place.
Transcribed Image Text:Question Type: Application. This question is related to material presented in Board 8.1. Fluoride is often added to drinking water supplies by local utility companies, because, according to the Center for Disease Control and Prevention (CDC), “Drinking fluoridated water keeps teeth strong and reduces cavities (also called tooth decay) by about 25% in children and adults. By preventing cavities, community water fluoridation has been shown to save money both for families and for the US health care system." A common way to add fluorine to drinking water is through dissolving sodium fluoride in carefully controlled amounts. If a local utility company fluorinates their tap water by adding 22.5 g of sodium fluoride per 1.0 × 10³ gallons of water, what is the concentration of fluoride anion (hint: NOT the concentration of sodium fluoride) in that water in units of ppm? Note: 1 gallon = 4.5461 L and the density of water is 1.00 g/mL. Report only the numerical part of your answer in units of "ppm fluoride," rounded to the hundredths place.
Expert Solution
Step 1 Given

Volume of water = 1.0 x 103 gallons

Mass of NaF = 22.5 g

The questions requires to calculate concentration of F- in ppm.

 

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