BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

Solutions

Chapter
Section
BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 12, Problem 45E
Textbook Problem
46 views

Tap water is often fluoridated with a sodium fluoride ( NaF ) concentration of approximately 1 ppm. If you consume 0.8 kg of tap water per day, how many grams of NaF do you consume?

Interpretation Introduction

Interpretation:

The amount of NaF (in grams) consumed per day is to be calculated.

Concept Introduction:

Solutions are homogeneous mixtures made up of two components, the solute and the solvent.

The same solutes and solvents can form a number of combinations by varying their amounts. These combinations can be differentiated in terms of concentration of solutions. Concentration of a solution is defined as the amount of solute present in the given amount of solvent.

There are many ways of expressing concentration of solutions, such as mass percent, volume percent, molarity, parts per million.

Mass percent is defined as the mass of solute present in 100 g of solution.

Volume percent is defined as the mass of solute present in 100 mL of solution.

Parts per million is defined as the mass of solute present in 106 g of solution. It is used for expressing concentration when a small amount of solute is present in the solution.

It is known 1 g = 1000 mg, conversion factor for g to mg is as 1000 mg1 g

Concentration of solution (ppm) = Mass of solute  (g)Mass of solution  (g)× 106ppm

Explanation of Solution

Given Information: Concentration of NaF in tap water is 1 ppm.

Mass of water sample is 0.8 kg.

The amount of NaF (in grams) consumed is calculated as follows:

Conversion of mass of water from kg to g is as follows:

0.8 kg = 1000 g1 kg×0.8 kg = 800 g

Mass of NaF is calculated as follows:

Concentration of NaF (ppm) = Mass of solute (NaF) (g)Mass of solution (water) (g)× 10

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Chapter 12 Solutions

Chemistry In Focus
Show all chapter solutions
add
Ch. 12 - A representation of liquid water is shown below....Ch. 12 - A mixture initially contains equal masses of...Ch. 12 - An older home has lead pipes. Should you boil the...Ch. 12 - Why are liquid drops spherical in shape?Ch. 12 - Would there be solids and liquids if cohesive...Ch. 12 - From a molecular viewpoint, explain the...Ch. 12 - Explain evaporation from a molecular point of...Ch. 12 - Define each of the following: a. boiling point b....Ch. 12 - Describe the relationship between intermolecular...Ch. 12 - Define each of the following intermolecular forces...Ch. 12 - Why do oil and water not mix?Ch. 12 - Explain how soap works.Ch. 12 - Define volatile and nonvolatile. How are these...Ch. 12 - Why does sweating cool the human body?Ch. 12 - Define each of the following: a. solution b....Ch. 12 - What are the unique properties of water? Why are...Ch. 12 - Where did Earths water come from?Ch. 12 - Explain the hydrologic cycle.Ch. 12 - What are the impurities present in hard water?...Ch. 12 - What are the common classifications of water based...Ch. 12 - How does a water softener work?Ch. 12 - List the four types of contaminants commonly found...Ch. 12 - Which water contaminants pose immediate health...Ch. 12 - What steps should be taken to minimize intake from...Ch. 12 - What is the SDWA?Ch. 12 - Explain how drinking water is treated before being...Ch. 12 - Is home water treatment necessary for health...Ch. 12 - Explain how each of the following home...Ch. 12 - Explain the concerns that groups like the EWG or...Ch. 12 - Butane is a gas at room temperature, and hexane is...Ch. 12 - One of the following molecules is a solid at room...Ch. 12 - Which compound would you expect to have the...Ch. 12 - Which compound would you expect to have the...Ch. 12 - All the following are liquids at room temperature....Ch. 12 - Which liquid would you expect to be least...Ch. 12 - Classify each molecule as polar or nonpolar:...Ch. 12 - Classify each molecule as polar or nonpolar:...Ch. 12 - What are the criteria used by the perfume industry...Ch. 12 - Two nonpolar substances with similar structures...Ch. 12 - What is the molarity of a solution that contains...Ch. 12 - What is the molarity of a solution that contains...Ch. 12 - How many grams of sucrose (C12H22O11) are present...Ch. 12 - How many grams of glucose (C6H12O6) are present in...Ch. 12 - How many grams of NaCl are present in 225mLofa2.3%...Ch. 12 - How many grams of NaF are present in 4.5 L of a...Ch. 12 - A 250-g sample of hard water contains...Ch. 12 - A 15-g sample of water contains 1.110-3gofCaCO3....Ch. 12 - Tap water is often fluoridated with a sodium...Ch. 12 - A softened water sample contains 245 ppm Na. If a...Ch. 12 - A 475-mL sample of water is extracted from a well...Ch. 12 - A 255-mL sample of water is taken from a tap and...Ch. 12 - A water sample is found to be high in lead...Ch. 12 - Your water provider posts an alert in the local...Ch. 12 - The quote by Roger Joseph Boscovich at the...Ch. 12 - Explain the difference between a polar molecule...Ch. 12 - The EPA has become concerned over the use of lead...Ch. 12 - When water is boiled, it is converted into a gas....Ch. 12 - Suppose a perfume contained the following two...Ch. 12 - Explain what you think might be occurring in dry...Ch. 12 - Over half of our nations drinking water contains...Ch. 12 - The following drawing shows a molecular view of a...

Additional Science Textbook Solutions

Find more solutions based on key concepts
Show solutions add
Legumes are a particularly nutritious choice among protein-rich foods because they also provide a. vitamin C an...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

What carboxylic acid is present in sour milk and sauerkraut ?

Chemistry for Today: General, Organic, and Biochemistry

Why does the expansion of a stars envelope make it cooler and more luminous?

Horizons: Exploring the Universe (MindTap Course List)

How is La Nia different from El Nio?

Oceanography: An Invitation To Marine Science, Loose-leaf Versin

A 10.0- resistor, 10.0-mH inductor, and 100-F capacitor are connected in series to a 50.0-V (rms) source having...

Physics for Scientists and Engineers, Technology Update (No access codes included)