Compare reaction of silver nitrate in ethanol and silver nitrate in 50% ethanol:50%Water

Answers

Answer 1

The reaction of silver nitrate (AgNO3) in ethanol and in a 50% ethanol:50% water mixture will differ due to the solvent properties.

In pure ethanol, silver nitrate will have limited solubility, and its reactivity may be decreased. This is because ethanol is a polar organic solvent, and silver nitrate is an ionic compound, which generally dissolves better in polar inorganic solvents like water.

In a 50% ethanol:50% water mixture, silver nitrate will dissolve more readily and exhibit increased reactivity. The presence of water, a polar inorganic solvent, enhances the solubility of silver nitrate, allowing for better interaction with other reactants.

In summary, silver nitrate will generally have a more effective reaction in a 50% ethanol:50% water mixture compared to pure ethanol, due to improved solubility and reactivity.

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Related Questions

Most air pollution comes from...
Thermal inversions
Burning fossil fuels
Ozone layer depletion
Volcanic eruptions

Answers

The burning of fossil fuels such as coal, oil, and gas releases a variety of pollutants into the air, including carbon dioxide, nitrogen oxides, sulfur dioxide, and particulate matter. The correct answer is 2.

These pollutants contribute to a range of environmental and health problems, including climate change, respiratory illness, and cardiovascular disease. While other factors such as thermal inversions and volcanic eruptions can also contribute to air pollution, they are not as significant as the ongoing combustion of fossil fuels by human activity. Addressing air pollution requires a multi-pronged approach, including transitioning to cleaner sources of energy. Hence option 2 is correct.

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--The complete Question is, Most air pollution comes from...

Thermal inversionsBurning fossil fuelsOzone layer depletionVolcanic eruptions --

Unsaturated triglycerides undergo autooxidation at the ______________________position of the fatty acid residue

Answers

Unsaturated triglycerides undergo autooxidation at the double bond position of the fatty acid residue. Autooxidation is a chemical reaction that occurs when fatty acids are exposed to oxygen and results in the formation of free radicals, which can cause damage to cells and tissues.

The double bond in unsaturated fatty acids is particularly susceptible to oxidation due to its chemical structure, which makes it more reactive than saturated fatty acids. This can lead to the formation of harmful compounds such as lipid peroxides, which can contribute to various health problems.

1. Unsaturated triglycerides contain one or more double bonds in their fatty acid chains.
2. Autooxidation is a chemical reaction that occurs when the unsaturated fatty acids are exposed to oxygen.
3. The double bond position in the fatty acid residue is the most susceptible site for autooxidation.
4. As a result, the unsaturated triglycerides undergo autooxidation at the double bond position of the fatty acid residue.

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Do ethers boil at high or low temperatures?

Answers

The boiling point of ethers varies depending on their chemical structure, but in general, ethers tend to have lower boiling points than comparable alcohols or carboxylic acids.

This is because ethers have weaker intermolecular forces than these other functional groups. However, the exact boiling point of a particular ether will depend on factors such as its molecular weight, shape, and polarity. Some ethers, such as diethyl ether, have relatively low boiling points and can boil at temperatures as low as 35 degrees Celsius, while others may have higher boiling points and require temperatures above 100 degrees Celsius to boil.

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Question 86
The hydro pneumatic tank typically contains_____ of its volume as water.
a. 50 percent
b. 80 percent
c. 20 percent
d. Does not contain water only compressed air

Answers

The hydro pneumatic tank typically contains b. 80 percent of its volume as water.

A hydro pneumatic tank is used to store water under pressure, and typically, 80 percent of its volume is filled with water. The remaining 20 percent is filled with compressed air, which helps to maintain the pressure in the tank. When the water is pumped into the tank, it compresses the air, which then acts as a cushion to maintain a constant pressure even when the water is being drawn out of the tank.

This is commonly used in water supply systems to maintain a consistent water pressure throughout the network. In addition, it can also be used in heating and cooling systems to store and circulate water. The hydro pneumatic tank is an essential component of many water systems and plays a vital role in ensuring a reliable water supply. The hydro pneumatic tank typically contains b.  80 percent of its volume as water.

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Question 11
In domestic water well supplies, which two elements cause most hardness?
a. Zn and Mg
b. Na and Mg
c. Ca and Mg
d. Ca and Na

Answers

In domestic water well supplies, the two elements cause the most hardness Ca and Mg. Option C is the correct answer.

In domestic water well supplies, the two elements that cause the most hardness are calcium (Ca) and magnesium (Mg).

Hard water is characterized by high levels of dissolved minerals, particularly calcium and magnesium ions.

These minerals can cause a variety of problems, including scaling in pipes and appliances, reduced efficiency of water heaters, and decreased effectiveness of soaps and detergents.

Zinc (Zn) and sodium (Na) are not typically associated with water hardness, although high levels of sodium can contribute to other water quality concerns. Therefore, option c, Ca and Mg, is the correct answer.

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in a bonding molecular orbital, the electron density is located * the nuclei which pulls the nuclei

Answers

In a bonding molecular orbital, the electron density is located between the nuclei, which pulls the nuclei closer together and stabilizes the bond.

In a bonding molecular orbital, the electron density is located between the nuclei which pulls the nuclei towards each other. This is because the electrons are shared by the two atoms, creating a bond that allows them to be attracted to each other. The more electron density there is between the nuclei, the stronger the bond will be. This is why atoms with similar electronegativities tend to form stronger bonds, as they share electrons more equally and have more balanced electron density between them.

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4.8. The purpose of galvanizing iron and steel is to A. eliminate all corrosion.
B. protect against deterioration. C. prevent galvanic action.
D. provide a more attractive finish.

Answers

The correct option is B. protect against deterioration. The process of galvanizing involves coating iron or steel with a layer of zinc to protect it from rust and other forms of corrosion.

This helps to extend the lifespan of the metal and keep it looking good over time. Galvanizing is a common technique used in a variety of industries, from construction to automotive manufacturing, to ensure the durability and longevity of metal components. Galvanizing is a process of coating the surface of iron or steel with a layer of zinc and this layer acts as an effective barrier that prevents oxygen and water from coming in contact with the underlying metal, reducing the rate of corrosion.

   It also provides a more attractive finish and prevents galvanic action, where two different types of metals react with each other and cause corrosion. Galvanizing is an effective way to extend the life of iron and steel products and can help reduce the cost of maintenance.

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Ethanol may be metabolized to acetic acid, then condensed with a coenzyme to form acetyl coenzyme A. Acetyl coenzyme A may then participate in:
A.the Krebs (citric acid) cycle.
B.glycolysis.
C.electron transport.
D.oxidative phosphorylation.

Answers

A. the Krebs (citric acid) cycle.

Acetyl coenzyme A is a key molecule in the Krebs cycle, also known as the citric acid cycle. In this cycle, acetyl coenzyme A is combined with oxaloacetate to form citrate, which undergoes a series of chemical reactions that ultimately produce ATP, the energy currency of the cell. Glycolysis, electron transport, and oxidative phosphorylation are other metabolic pathways that also produce ATP but do not directly involve acetyl coenzyme A.

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What happened when yellow precipitate formed in the aldol condensation?

Answers

Dibenzalacetone, or 1,5-Diphenyl-1,4-pentadien-3-one, was formed when yellow precipitate was formed in the aldol condensation.

When two aldehydes (or ketones) react with a diluted base to produce a molecule with both aldehyde and alcohol functional groups, this reaction is known as an aldol condensation. The byproducts of aldol are hydroxyaldehyde or hydroxyketone. The synthesis of new C-C bonds and the creation of bigger organic compounds both heavily rely on this process.

The substance- Dibenzalacetone, appears as the complementary colour of yellow because it absorbs photons from a blue region. As the compound forms in the reaction mixture, the equilibrium is altered in favour of the product.

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Calculate ^Hrxn for the reaction on the right

Answers

As a result, the reaction's enthalpy change is +1340 kJ/mol.

From kJ mol, how do you compute enthalpy change?

The standard enthalpy change of formation is calculated by subtracting the sum of the standard enthalpies of formation of the reactants and products from the total of the standard enthalpies of formation of the reactants. as well as the usual numbers for the enthalpy of formation: Hfo[A] = 433 KJ/mol. Hfo[B] equals -256 KJ/mol.

To calculate the enthalpy change for the given reaction, we can use Hess's Law and add the enthalpy changes for the two given reactions:

Reaction 1: Ethane gas + Oxygen gas → Carbon dioxide gas + Water vapor; Heat of reaction = -3120 kJ/mol

Reaction 2: Methane gas + Oxygen gas → Carbon dioxide gas + Water vapor; Heat of reaction = -890 kJ/mol

Multiplying Reaction 2 by 2 to balance the oxygen, we get:

2 Methane gas + 4 Oxygen gas → 2 Carbon dioxide gas + 4 Water vapor; Heat of reaction = -1780 kJ/mol

Now, we can reverse Reaction 1 and multiply by 1/2 to get the desired reaction:

1/2 (4 Carbon dioxide gas + 6 Water vapor → 2 Ethane gas + 7 Oxygen gas); Heat of reaction = +3120 kJ/mol

Adding the enthalpy changes for the two reactions, we get:

Heat of reaction for the given reaction = Heat of Reaction 2 x 2 + Heat of Reaction 3

Heat of reaction = -1780 kJ/mol + 3120 kJ/mol

Heat of reaction = +1340 kJ/mol

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2Mg(s) + O2(g) --> 2MgO(s)
If 2.35 grams of magnesium oxide are formed, how many grams of Mg reacted?

Answers

If 2.35 grams of magnesium oxide are formed, 1.42 grams of Mg reacted in the reaction.

What is magnesium oxide?

Magnesium oxide is a chemical compound composed of magnesium and oxygen, with the chemical formula MgO.

2 Mg(s) + O₂(g) -> 2 MgO(s)

From the equation, we can see that 2 moles of magnesium react with 1 mole of oxygen to produce 2 moles of magnesium oxide. This means that the mole ratio of magnesium to magnesium oxide is 2:2, or simply 1:1.

2.35 g MgO x (1 mol MgO/40.31 g MgO) = 0.0583 mol MgO

Since the mole ratio of Mg to MgO is 1:1, we know that 0.0583 moles of Mg also reacted. Now we can use the molar mass of Mg to calculate the mass of Mg that reacted:

0.0583 mol Mg x 24.31 g/mol = 1.42 g Mg

Therefore, 1.42 grams of Mg reacted in the reaction.

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what is the moler mass AL2S3

Answers

The molar mass of aluminium sulfide (Al₂S₃) is 150g/mol.

How to calculate molar mass?

Molar mass is the mass of a given substance divided by its amount, measured in moles. It is commonly expressed in grams (sometimes kilograms) per mole.

The molar mass of a substance can be calculated by summing up the atomic mass of all the elements made up in the compound.

According to this question, aluminium sulfide with the chemical formula Al₂S₃ is given.

Atomic mass of Al = 27Atomic mass of S = 32

Molar mass of Al₂S₃ = 27(2) + 32(3)

Molar mass = 54 + 96 = 150g/mol

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Around 90% of all the atoms in the universe are ________________, and they were all made by the Big
Bang, more than 13 billion years ago.

Answers

Around 90% of all atoms in the universe are made of hydrogen, the simplest and lightest element, and they were all produced during the Big Bang.

Conditions were extremely hot and dense for the initial few minutes of the cosmos. The simplest element, hydrogen, was created in this atmosphere through a process known as nucleosynthesis. Helium was produced through the fusion of protons and neutrons during this process, along with trace amounts of lithium and beryllium. Hydrogen atoms would eventually go on to create stars and galaxies, resulting in the intricate universe we know today. As the most prevalent element in the universe, hydrogen is frequently used as a benchmark by astronomers who research the cosmos.

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Predict the density for rhodium, Rh, given the density of cobalt, Co, (8.89 g/cm3) and iridium, Ir, (22.65 g/cm3).

Answers

The density of rhodium (Rh) is predicted to be approximately 15.77 g/cm³.

To predict the density of rhodium (Rh) using the given densities of cobalt (Co) and iridium (Ir):

Note the densities of cobalt and iridium
Cobalt (Co) density = 8.89 g/cm³
Iridium (Ir) density = 22.65 g/cm³

Find the average density of Co and Ir
Average density = (Density of Co + Density of Ir) / 2
Average density = (8.89 g/cm³ + 22.65 g/cm³) / 2

Calculate the average density
Average density = (31.54 g/cm³) / 2
Average density = 15.77 g/cm³

Using the average density of cobalt and iridium, we predict that the density of rhodium (Rh) is approximately 15.77 g/cm³. However, keep in mind that this is a rough estimation and the actual density of Rh may differ.

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two major diferences of terestial planets??

Answers

The two major differences of terrestrial planets are:

Size and composition: The Atmosphere:

What are terrestrial planets?

A terrestrial planet, or telluric planet, or solid planet, or rocky planet, is  described as a planet that is composed primarily of silicate rocks or metals.

Terrestrial planets are covered with solid surfaces, while the Jovian planets usually  have gaseous surfaces.

Mercury, Venus, Earth, and Mars are examples of  the terrestrial planets, while the Jovian planets are Jupiter, Saturn, Uranus, and Neptune.

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You label cells with a radioactive isotope of sulfur (35S). The only molecules that would be radioactively labeled in these cells are:

Answers

The only molecules that would be radioactively labeled in these cells are: Protein molecules.

Large biomolecules and macromolecules known as proteins are made up of one or more extended chains of amino acid residues. Among the many tasks that proteins carry out in living things include catalysing metabolic processes, replicating DNA, reacting to stimuli, giving cells and organisms shape, and moving chemicals from one place to another. The primary way that proteins differ from one another is in the order of their amino acids, which is determined by the nucleotide sequence of their genes and often causes a protein to fold into a certain 3D shape that controls its function.

A polypeptide is an ordered sequence of amino acid residues. At least one lengthy polypeptide is present in every protein. Less than 20–30 residue polypeptides are frequently referred to as peptides and are seldom thought of as proteins. Peptide bonds and nearby amino acid residues hold the individual amino acid residues together. The sequence of a gene, which is encoded in the genetic code, determines the arrangement of amino acid residues in a protein. The genetic code typically only defines the 20 conventional amino acids, but in certain species it may also include selenocysteine and—in some archaea—pyrrolysine.

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List the reason why aryl and vinyl halides do not undergo Sn2.

Answers

Aryl and vinyl halides are not good substrates for [tex]SN_{2}[/tex] reactions due to the following reasons:

Steric hindrance: In the [tex]SN_{2}[/tex] reaction, the nucleophile attacks the electrophilic carbon from the backside, which requires a clear path of attack. In the case of aryl and vinyl halides, the bulky aromatic or double bond group attached to the electrophilic carbon creates a lot of steric hindrance, making it difficult for the nucleophile to approach the carbon from the required angle.

Partial double bond character: In the case of vinyl halides, the double bond character of the carbon-carbon bond in the vinyl group reduces the availability of the electrophilic carbon for nucleophilic attack, making it less susceptible to [tex]SN_{2}[/tex] reaction.

Resonance stabilization: In aryl halides, the aromatic ring structure provides resonance stabilization to the electrophilic carbon, which makes it less electrophilic and less susceptible to nucleophilic attack.

Overall, these factors make aryl and vinyl halides poor substrates for [tex]SN_{2}[/tex] reactions.

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The patient in room 2 is afebrile. What is most likely their temperature?
The patient in room 8 is febrile. What is most likely their temperature?

Answers

Room 2 is probably 98.6 degrees. Room 8 is probably over 99.5 degrees

21. 4.21 moles of S2Cl4 are introduced into a 2.0 L vessel. S2Cl4(g) 2SCl2(g)
At equilibrium, 1.25 moles of S2Cl4 are found to remain in the container. Calculate Kc for
this reaction.

Answers

The concentrations of the reactants and products at equilibrium, we can calculate Kc 2.56

What is concentrations?

Concentration is a measure of the amount of a substance within a given quantity of another substance or medium. It is usually expressed as mass per unit volume. For example, a concentration of a solute in a solution is the mass of that solute, per unit volume of the solution. Concentration is an important concept in many fields, including chemistry, physics, and biology, amongst other sciences.

The reaction that is happening is: S₂Cl₄(g) → 2SCl₂(g)
For the reactant, S₂Cl₄ at equilibrium:
Moles S₂Cl₄ = 1.25 moles
Volume = 2.0 L
Concentration = 1.25 moles / 2.0 L = 0.625 M
For the product, SCl₂ at equilibrium:
Moles SCl₂ = 2.5 moles (since 2 moles of SCl₂ are produced for every mole of S₂Cl₄)
Volume = 2.0 L
Concentration = 2.5 moles / 2.0 L = 1.25 M
Now that we have the concentrations of the reactants and products at equilibrium, we can calculate Kc.
Kc = [SCl₂]₂ / [S₂Cl₄]
Kc = (1.25 M)² / 0.625 M
Kc = 2.56

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2.3. Face brick differs from building brick in that it is generally A. more resistant to severe weathering.
B. harder and more durable. C. more uniform in size and color.
D. available in a variety of sizes.

Answers

Face brick differs from building brick in that it is generally C. more uniform in size and color.

answer - The correct answer is C. Face brick differs from building brick in that it is generally more uniform in size and color. Face brick is specifically designed to be aesthetically pleasing and used for facing buildings, whereas building brick is used for structural purposes. Face brick is also typically made from higher quality clay and fired at higher temperatures to ensure consistent color and durability. However, it may not necessarily be more resistant to severe weathering or harder than building brick, and may not always be available in a variety of sizes. Face bricks are specifically manufactured for their appearance and are used in visible parts of construction, whereas building bricks prioritize structural integrity.

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Calculate the mass of C in 5.46 g of C2H4?A) 0.455 g C B) 4.68 g C C) 65.6 g C D) 13.1 g C E) 24.0 g C

Answers

To calculate the mass of C in 5.46 g of C₂H₄, we need to first find the molar mass of C₂H₄:

C₂H₄ = (2 x atomic mass of C) + (4 x atomic mass of H)

= (2 x 12.01 g/mol) + (4 x 1.01 g/mol)

= 24.02 g/mol + 4.04 g/mol

= 28.06 g/mol

Next, we can use the molar mass to find the moles of C₂H₄:

moles of C₂H₄ = mass / molar mass

= 5.46 g / 28.06 g/mol

= 0.194 moles

Since there are 2 moles of C in 1 mole of C₂H₄, we can find the moles of C:moles of C = 2 x moles of C₂H₄

= 2 x 0.194 moles

= 0.388 moles

Finally, we can use the molar mass of C to find the mass of C:

mass of C = moles of C x atomic mass of C

= 0.388 moles x 12.01 g/mol

= 4.66 g

Therefore, the mass of C in 5.46 g of C₂H₄ is approximately 4.66 g. The closest answer choice is A) 0.455 g C, which is not the correct answer.

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The metal component that is protected from corrosion is called the?
a) Cathode
b) Anode
c) Rectifier
d) Electron

Answers

The metal component that is protected from corrosion is called the option A: cathode.

Metal surfaces experience corrosion, an electrochemical process, when they come into contact with electrolytes. Corrosion is the process of converting a metal back to its original form as an ore; during this transformation, the metal disintegrates and loses structural integrity. Pipelines, structures, and ships all make use of these metal surfaces.

It is crucial to make sure that these metals endure as long as possible, which calls for cathode protection. Cathode is a metal rod placed in an electrolyte where oxidation takes place so that it loses electrons in the electrolyte and get oxidized. Zinc metal is generally used as a cathode electrode.

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If 0. 300 g of FeSO4x7H2O contains 0. 0603 g of Fe, 0. 0346g of S, 0. 190 g of O, and 0. 0151 of H, what is the percent composition of FeSO4x7H2O?

Answers

Therefore, the percent composition of FeSO4x7H2O is: 20.10% Fe, 11.53% S, 63.33% O, 5.03% H

The molar mass of FeSO4x7H2O can be calculated as follows:

[tex]FeSO4* 7H2O = (1 * 55.845 g/mol) + (1 * 32.06 g/mol) + (4 * 16.00 g/mol) + (7 * 18.02 g/mol)[/tex]

FeSO4x7H2O = 278.01 g/mol

Now, we can calculate the mass of each element:

Mass of Fe = 0.0603 g

Mass of S = 0.0346 g

Mass of O = 0.190 g

Mass of H = 0.0151 g

Total mass of compound = 0.300 g

Calculating the percent composition of FeSO4x7H2O as follows:

Fe = (Mass of Fe / Total mass of compound) x 100%

Fe = (0.0603 g / 0.300 g) x 100%

Fe = 20.10%

S = (0.0346 g / 0.300 g) x 100%

S = 11.53%

O = (0.190 g / 0.300 g) x 100%

O = 63.33%

H = (0.0151 g / 0.300 g) x 100%

H = 5.03%

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What is the total number of fused rings present in a steroid?
A.1
B.2
C.4
D.6

Answers

The correct answer is C.4. Steroids are composed of four fused rings, specifically three cyclohexane rings and one cyclopentane ring. This fused ring system is called the steroid nucleus.

Steroids are a class of organic molecules that have a common structure consisting of four fused rings of carbon atoms. The three rings are cyclohexane in structure, while the fourth is a cyclopentane ring. This arrangement of rings gives steroids their characteristic structure and properties.

Steroids are synthesized naturally in the body and play a variety of important roles, including serving as hormones, signaling molecules, and structural components of cell membranes. Some common examples of steroids include cholesterol, estrogen, testosterone, and cortisol.

Steroids are also widely used in medicine for their anti-inflammatory and immunosuppressive properties. However, steroids are also commonly abused as performance-enhancing drugs, particularly in sports. The use of these drugs can lead to a range of negative health effects, including liver damage, infertility, and increased risk of heart disease and stroke.

The study of steroids and their properties is an active area of research in fields such as biochemistry, pharmacology, and synthetic chemistry.

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When disinfecting a new or repaired main, what is the minimum chlorine residual at the extreme end of the main after standing for 24 hours?
a.) 15 mg/L
b.) 20 mg/L
c.) 25 mg/L
d.) 30 mg/L

Answers

The minimum chlorine residual at the extreme end of the main after standing for 24 hours when disinfecting a new or repaired main is c.) 25 mg/L.

What should be the minimum chlorine level while disinfecting?

When disinfecting a new or repaired main, the American Water Works Association (AWWA) recommends a minimum chlorine residual of 50 mg/L at the upstream end of the main and 25 mg/L at the downstream end after a contact time of 24 hours. This ensures that the disinfectant has sufficient time to reach and eliminate any bacteria or viruses that may be present in the water mains. The residual chlorine concentration is typically measured using a chlorine test kit or a chlorine analyzer.

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Question 13
Which would not be used as coagulant?
a. black alum
b. chlorinated copperas
c. ferric chloride
d. sodium hypochlorite

Answers

As a coagulant, sodium hypochlorite would not be employed. As a result, option D is right.

In water treatment, the coagulation is very important step that involve the use of chemicals,. Sedimentation or filtration can then be used to remove the coagulated particles. In water treatment, coagulants such as black alum, chlorinated copperas, and ferric chloride are utilized.

Sodium hypochlorite, is a preferred disinfectant and not a coagulant. It is effective against germs and viruses but lacks coagulation characteristics. Option D is therefore true, and sodium hypochlorite would not be utilized as a coagulant.

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Question 45
One advantage of using cyanuric acid additive is that it
a. allows easier measurement of chlorine
b. prevents pH deterioration
c. stabilizes residual chlorine
d. requires less soda ash as an additive to the pool

Answers

The correct answer to question 45 is c. Cyanuric acid additive stabilizes residual chlorine in the pool water.

What is the use of cyanuric acid?



Cyanuric acid acts as a stabilizer for chlorine, helping to protect it from the effects of UV light, which can cause chlorine to break down more quickly. By stabilizing residual chlorine, cyanuric acid can help maintain the effectiveness of the chlorine in your pool, ensuring it remains clean and safe for use. This is important because without stabilization, chlorine levels can fluctuate rapidly and become ineffective in killing bacteria and other contaminants. Stabilized chlorine lasts longer in the water and provides more consistent sanitation. While cyanuric acid does not directly affect pH levels, it can have an indirect impact by reducing the need for additional chlorine, which can lower pH levels over time. Cyanuric acid also does not affect the amount of soda ash needed as a pH adjuster.

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Which components of black tea contribute to the color?

Answers

The components of black tea that contribute to its color are the polyphenolic compounds called theaflavins and thearubigins.

These compounds are formed during the oxidation process that black tea undergoes after it has been harvested. Theaflavins are yellow to orange in color, while thearubigins are reddish-brown.

The longer the oxidation process, the more theaflavins and thearubigins are produced, which contributes to the darker color of the tea. Additionally, the amount of these compounds can vary based on the tea variety, growing conditions, and processing methods.

Theaflavins and thearubigins not only contribute to the color of black tea but also to its flavor and aroma, giving it a unique taste and fragrance.

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The ability (or inability) to detect side products using IR and/or physical properties and how the detectable side products make their presence known while these techniques are in use

Answers

The detectability of side products depends on the nature of the product and the sensitivity of the analytical techniques used.

IR spectroscopy is a powerful tool for detecting functional groups in molecules, and it can be used to identify the presence of side products in a reaction. However, some side products may not have distinctive functional groups or may be present in very low concentrations, making them difficult to detect by IR.

Physical properties such as melting point, boiling point, and solubility can also be used to detect side products. If a side product has a significantly different physical property compared to the desired product, it can be isolated and identified.

In some cases, the presence of side products may be inferred from changes in reaction yield or other analytical data. For example, a decrease in yield or a change in the reaction rate may suggest the formation of a side product.

Overall, the detectability of side products depends on the nature of the product and the sensitivity of the analytical techniques used.

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Full Question: Explain the ability (or inability) to detect side products using IR and/or physical properties, and how the detectable side products make their presence known while these techniques are in use in chemical reactions.

A solution that is 0.016 M in Na+ can be prepared by adding how many grams of Na2SO4
(MW 142 g) to water and diluting to a final
volume of 130.0 mL?
1. 59 g
2. 0.15 g
3. 0.30 g
4. 0.00015 g
5. 0.0059 g
020

Answers

0.15 g of Na₂SO₄ can be added to water and diluting to a final volume of 130.0 mL

What is Molarity?

The molarity (M) of a solution is defined as the number of moles of solute per liter of solution.

Equation:

Number of moles of solute = Molarity x Volume of solution in liters

The volume of the final solution is given as 130.0 mL, which is 0.1300 L. Therefore, the number of moles of Na+ required can be calculated as:

Number of moles of Na+ = 0.016 M x 0.1300 L

Number of moles of Na+ = 0.00208 moles

Since each mole of Na₂SO₄ produces two moles of Na+, the number of moles of Na₂SO₄ required can be calculated as:

Number of moles of Na₂SO₄ = 0.00208 moles / 2

Number of moles of Na₂SO₄ = 0.00104 moles

Finally, we can calculate the mass of Na₂SO₄ required using its molar mass:

Mass of Na₂SO₄ = Number of moles x Molar mass

Mass of Na₂SO₄ = 0.00104 moles x 142 g/mol

Mass of Na₂SO₄ = 0.1477 g

Therefore, we need to add 0.1477 grams of Na₂SO₄ to water and dilute it to a final volume of 130.0 mL to prepare a 0.016 M solution of Na+.

The closest answer choice is 0.15 g.

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