Homework Answers
22. (b) Aeration is a physical treatment method used for taste and odour management and for removal of dissolved iron and Mg. It consists of spraying water into the air or cascading it downward through stacks of perforated trays. Dissolved gases that cause tastes and odours area unit transferred from the water to the air. gas from the air, meanwhile, reacts with any iron and atomic number 25 within the water, forming a precipitate that's removed by deposit and filtration.
OTHER THREE ARE CHEMICAL METHOD FOR REMOVAL OF TASTE AND ODOUR.
23.(d) Ozone is a strong oxidiser which is effective and efficient sterilising agent. It is a new technique for medical devices and not economical method.
OTHER options are correct because it have pungent and pale blue colour. Ozone acts as powerful oxidizing agent because it easily decompose to give an atom of nascent oxygen, ozone is an unstable gas that quickly decomposes into ordinary oxygen, it degrades to oxygen in a few minutes and leaves no chemical residue.
24. (d) All of the above
25. (a) purple - pink
Add Answer to:
3
pages
22.. Which of the following ia not a chemical method of taste and odor...
a) which of the following contaminants can lead to metallic taste in water and discoloration of...
a) which of the following contaminants can lead to metallic
taste in water and discoloration of fixtures has generally very few
health concerns
b) which of the following types of drinking water can lead to
metals leaching from pipes potentially leading to hazardous
drinking water conditions if found in excess in households?
c)
if the household water source has a hundred fold decrease in H+
concentration from 5.5 what is the new pH of the water source
Question 42 Which...
b.Um C. Mg d. mL 22. Which of the following demonstrate a chemical reaction of water?...
b.Um C. Mg d. mL 22. Which of the following demonstrate a chemical reaction of water? a. Water boils to produce steam at 100 C (212 F) Do not write anything on the back of any page b. Water produces gas with sodium metal c. Water and oil separate when combined d. Water dissolves sugar bine shrimp in water with different
1. Indicate which of the following would be considered physical properties (P) and which would be...
1. Indicate which of the following would be considered physical properties (P) and which would be considered chemical properties (C) of iron. ー-a. Iron reacts with oxygen to form iron oxides. b. Iron is a good conductor of heat and electricity. C. Iron melts at 1535°C. d. When iron is immersed in a solution of hydrochloric acid, hydrogen gas is produced. e. Iron becomes red-hot when heated. __ f. A500-cc volume of iron has a mass of 3930 g. Iron...
Question 4 1 pts Which one of the following systems is most likely to produce a...
Question 4 1 pts Which one of the following systems is most likely to produce a spectrum consisting only of the emission lines? oceanic water cold gas of very high density white hot piece of iron hot gas of very low density hot gas of very high denisity Question 5 1 pts Which of the following phenomena are due to the tidal interaction in the Earth-Moon system? (A) oceanic tides (B) Moon moving further away from the Earth (C) Earth's...
Iron can be removed from water by oxidation. The following oxidants are commonly used for iron...
Iron can be removed from water by oxidation. The following oxidants are commonly used for iron removal. a. Please calculate: for each mg of Fe removed, what is the mass of oxidant needs? b. And what is the mass of sludge generated for each mg of Fe removed? C. If sludge disposal is a concern, which oxidant would you choose? d. If chemical consumption needs to be minimized, which oxidant would you choose? Oxidant Oxygen Chlorine Chlorine dioxide Potassium permanganate...
Questionl: Explain four basic classes of solid materials MCQ Question 2: Which of the following is...
Questionl: Explain four basic classes of solid materials MCQ Question 2: Which of the following is true for polymers? a) They have very high molecular mass b) They do not have linear stress-strain curve c) They have high strength to mass ratio d) All of the mentioned Question 3: Ceramics make excellent refractory materials. A material is said to be refractory if it: a) resists the flow of electric current b) has high refractive index c) retains its strength at...
please answer ASAP 1) Which of the following is not a common bacterial shape? A) spirochote...
please answer ASAP
1) Which of the following is not a common bacterial shape? A) spirochote B.COCCIES Cdise Dj bacillas 2) The shape of a bacterial cell is determined and maintained by the A) cell membrane B) cell wall C) capsule D) slime laver 3) Which bacterial genus normally lacks a cell wall? A) Mycobacterium B) Streptococcus C) Mycoplasma D) Bacillus 4) Cell membranes are composed primarily of A) phospholipids and sugars B) teicoic acid and proteins C) phospholipids and...
Bunsen burner is opened (providing sufficient Or), which of the Tollowing 5. When the air hole...
Bunsen burner is opened (providing sufficient Or), which of the Tollowing 5. When the air hole in correct A. The gas burns efficiently, producing a very hot blue flame B. The gas does not burn well, producing a very hot, blue flame C. The gas burns efficiently, producing a relatively cool, yellow flame D. The gas does not burn well, producing a relatively cool, yellow flame 6. The substance does not loss its chemical composition after carrying out a Chemical...
When ammonia gas is dissolved in water which of the following occurs? Select one: a. None...
When ammonia gas is dissolved in water which of the following occurs? Select one: a. None of the statements are true. b. The pH of the solution goes down c. The pH of the solution goes up d. There is no reaction.
which of the following is NOT a spontaneous process a. the combustion of natural gas in...
which of the following is NOT a spontaneous process a. the combustion of natural gas in your kitchen after ignition b. a glass of water you left in your apartment vaporized to air c. a bike going up a hill by itself d. a hot drink cooling down to room temperature e. ammonia dissolved in water absorbing heat from the surrounding environment
a) which of the following contaminants can lead to metallic
taste in water and discoloration of fixtures has generally very few
health concerns
b) which of the following types of drinking water can lead to
metals leaching from pipes potentially leading to hazardous
drinking water conditions if found in excess in households?
c)
if the household water source has a hundred fold decrease in H+
concentration from 5.5 what is the new pH of the water source
Question 42 Which...
b.Um C. Mg d. mL 22. Which of the following demonstrate a chemical reaction of water? a. Water boils to produce steam at 100 C (212 F) Do not write anything on the back of any page b. Water produces gas with sodium metal c. Water and oil separate when combined d. Water dissolves sugar bine shrimp in water with different
1. Indicate which of the following would be considered physical properties (P) and which would be considered chemical properties (C) of iron. ー-a. Iron reacts with oxygen to form iron oxides. b. Iron is a good conductor of heat and electricity. C. Iron melts at 1535°C. d. When iron is immersed in a solution of hydrochloric acid, hydrogen gas is produced. e. Iron becomes red-hot when heated. __ f. A500-cc volume of iron has a mass of 3930 g. Iron...
Question 4 1 pts Which one of the following systems is most likely to produce a spectrum consisting only of the emission lines? oceanic water cold gas of very high density white hot piece of iron hot gas of very low density hot gas of very high denisity Question 5 1 pts Which of the following phenomena are due to the tidal interaction in the Earth-Moon system? (A) oceanic tides (B) Moon moving further away from the Earth (C) Earth's...
Iron can be removed from water by oxidation. The following oxidants are commonly used for iron removal. a. Please calculate: for each mg of Fe removed, what is the mass of oxidant needs? b. And what is the mass of sludge generated for each mg of Fe removed? C. If sludge disposal is a concern, which oxidant would you choose? d. If chemical consumption needs to be minimized, which oxidant would you choose? Oxidant Oxygen Chlorine Chlorine dioxide Potassium permanganate...
Questionl: Explain four basic classes of solid materials MCQ Question 2: Which of the following is true for polymers? a) They have very high molecular mass b) They do not have linear stress-strain curve c) They have high strength to mass ratio d) All of the mentioned Question 3: Ceramics make excellent refractory materials. A material is said to be refractory if it: a) resists the flow of electric current b) has high refractive index c) retains its strength at...
please answer ASAP
1) Which of the following is not a common bacterial shape? A) spirochote B.COCCIES Cdise Dj bacillas 2) The shape of a bacterial cell is determined and maintained by the A) cell membrane B) cell wall C) capsule D) slime laver 3) Which bacterial genus normally lacks a cell wall? A) Mycobacterium B) Streptococcus C) Mycoplasma D) Bacillus 4) Cell membranes are composed primarily of A) phospholipids and sugars B) teicoic acid and proteins C) phospholipids and...
Bunsen burner is opened (providing sufficient Or), which of the Tollowing 5. When the air hole in correct A. The gas burns efficiently, producing a very hot blue flame B. The gas does not burn well, producing a very hot, blue flame C. The gas burns efficiently, producing a relatively cool, yellow flame D. The gas does not burn well, producing a relatively cool, yellow flame 6. The substance does not loss its chemical composition after carrying out a Chemical...
Most questions answered within 3 hours.
-
Executive Program Practical Connection Assignment
Subject : Operations Security.
Assignment:
Provide a reflection of at least...
asked 6 minutes ago -
Every time Casey is at bat he has a 0.4 probability of
getting on base (assume...
asked 14 minutes ago -
The Walston Company is to be liquidated and has the following
liabilities:
Income taxes
$
9,400...
asked 21 minutes ago -
If
the more comprehensive data is available in MEPS, why does the NHIS
still exist? How...
asked 42 minutes ago -
Koo argues that the Japanese economy in the 1990s suffered from
a balance sheet recession. What...
asked 36 minutes ago -
Automobile mechanics conduct diagnosis tests on 150 new cars of
particular make and model to determine...
asked 30 minutes ago -
11) Find the proceeds of a 5 year non-interest
bearing note for $6500 discounted 2.5 years...
asked 37 minutes ago -
Required: Prepare the consolidated financial statements of
Griffin Ltd at 30 June 2019.
Griffin Ltd is...
asked 45 minutes ago -
1.How large must the coefficient of static friction be between
the tires and the road if...
asked 1 hour ago -
What is the time complexity (Big-O) of the following code?
class Main
{
// Recursive...
asked 1 hour ago -
Economists look at any situation in terms of its component
parts: the people making decisions, the...
asked 1 hour ago -
What is a population?
Select one:
a. All of the individual organisms belonging to the same...
asked 1 hour ago