Interpretation:
The given statement is to be explained.
Concept Introduction:
Water gets polluted due to the presence of various biological and chemical contaminants in it. Biological contaminants include microorganisms such as Giardia, Legionella while chemical contaminants are mercury, lead, benzene, trichloroethylene etc. Both these render water unfit for consumption by human beings and animals, if the contaminant exceeds a certain limit, termed as the Maximum Contaminant Limit.
The concentration of a contaminant is reported as the mass of contaminant (in milligrams) present in one liter of water.
Hard water is a solution of calcium and magnesium salts in water. Presence of calcium and magnesium ions makes water hard and renders it unusable for various purposes, such as cleaning clothes and utensils, and in water heaters etc.
Boiling of water cannot get rid of contaminants because this process decreases the total volume of the sample but the mass of the contaminant remains same. Moreover, the concentration of the contaminant increases.
Want to see the full answer?
Check out a sample textbook solutionChapter 12 Solutions
Bundle: Chemistry In Focus: A Molecular View Of Our World, 6th + Owlv2 6-month Printed Access Card
- A pdf file of your hand drawn, stepwise mechanisms for the reactions. For each reaction in the assignment, you must write each mechanism three times (there are 10 reactions, so 30 mechanisms). (A) do the work on a tablet and save as a pdf., it is expected to write each mechanism out and NOT copy and paste the mechanism after writing it just once. Everything should be drawn out stepwise and every bond that is formed and broken in the process of the reaction, and is expected to see all relevant lone pair electrons and curved arrows. Aldol: NaOH HO H Δ NaOH Δarrow_forwardNonearrow_forwardDraw structures corresponding to the following names and give IUPAC names for the following compounds: (8 Point) a) b) c) CH3 CH2CH3 CH3CHCH2CH2CH CH3 C=C H3C H H2C=C=CHCH3 d) CI e) (3E,5Z)-2,6-Dimethyl-1,3,5,7-octatetraene f) (Z)-4-bromo-3-methyl-3-penten-1-yne g) cis-1-Bromo-2-ethylcyclopentane h) (5R)-4,4,5-trichloro-3,3-dimethyldecanearrow_forward
- Draw a Newman projection from carbon 3 to carbon 2 in the highest energy conformation for the following molecule. What is this conformation called? What kind of strain is present? Brarrow_forwardWhich of the following dienophiles is most reactive in a Diels-Alder reaction: Please explain why the correct answer to this question is option 5. Please provide a detailed explanation.arrow_forwardWhich of the following would you expect to be aromatic? Please provide a detailed explanation.arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry for Engineering StudentsChemistryISBN:9781337398909Author:Lawrence S. Brown, Tom HolmePublisher:Cengage LearningWorld of ChemistryChemistryISBN:9780618562763Author:Steven S. ZumdahlPublisher:Houghton Mifflin College Div
- Chemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co