Why do you add hydroxide to your hexanediamine solution? what would occur if you did not add it?.

The primary sources of acidity in acid rain are the gases SO[tex]_{2}[/tex] and NO[tex]_{x}[/tex] So, the correct option is (c) SO[tex]_{2}[/tex] and NO[tex]_{x}[/tex]

A chemical process that starts when gases like sulphur dioxide and nitrogen oxides are discharged into the atmosphere leads to acid rain. These substances have the ability to ascend very far into the sky, where they combine and react with oxygen, water, and other chemicals to produce acid rain, an additional form of acidic pollution.

Acidic particles corrode metal and hasten the deterioration of paint and stone. Power plants are the primary sources of SO[tex]_{2}[/tex] . Burning fossil fuels produces nitrogen dioxide (like gasoline). Cars, lorries, and power plants are the biggest producers of NO[tex]_{2}[/tex].

Therefore, The primary sources of the acidity in acid rain are the gases SO[tex]_{2}[/tex] and NO[tex]_{x}[/tex].So, the correct option is (c) SO[tex]_{2}[/tex] and NO[tex]_{x}[/tex]

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Answer:

Fe(CN)₂,  FeCO₃,  Pb(CN)₄,  Pb(CO₃)₂

Explanation:

Cations (positively charged ions) can only form ionic bonds with anions (negatively charged ions). However, you can't just simply put one cation and one anion together to form a compound. Each compound needs to been neutral, or have an overall charge of 0. When cations and anions do not have charges that perfectly cancel, you need to modify the amount of each ion in the compound.

1.) Fe(CN)₂
-----> Fe²⁺ and CN⁻

-----> +2 + (-1) + (-1) = 0

2.) FeCO₃

-----> Fe²⁺ and CO₃²⁻

-----> +2 + (-2) = 0

3.)  Pb(CN)₄

-----> Pb⁴⁺ and CN⁻

-----> +4 + (-1) + (-1) + (-1) + (-1) = 0

4.) Pb(CO₃)₂

-----> Pb⁴⁺ and CO₃²⁻

-----> +4 +(-2) + (-2) = 0

Answer:

Mg+2HCL-Magnesium Chloride +Hygrogen

[tex] > [/tex]

Explanation:

N.O of moles=Mass\Molar Mass

192÷24=8

1:1

8×2=16

[tex]\huge\underline{\underline{\boxed{\mathbb {SOLUTION:}}}}[/tex]

[tex]\longrightarrow \sf{Mg+2HCI \Longrightarrow MgCl_2+H_2}[/tex]

[tex]\longrightarrow \sf{molMg=129gMg \times \dfrac{1molMg}{24.305gMg=} }[/tex]

[tex]\small \sf{\longrightarrow molH_2=7.90molMg \times \dfrac{1molH_2}{1molMg}= 7.90molH_2 }[/tex]

[tex]\small \sf{\longrightarrow massH_2=7.90H_2 \times \dfrac{2.016g}{1molH_2}= 7.90molH_2= 15.9 \: gH_2}[/tex]

[tex]\huge\underline{\underline{\boxed{\mathbb {ANSWER:}}}}[/tex]

[tex] \small\bm{ The \: mass \: of \:H_2 \: produce \: will \: be \: 15.9 }[/tex] [tex]\bm{grams.}[/tex]

Represents a contraindication to the administration of nitroglycerin increased intracranial pressure

Nitroglycerin is a vasodilator that is primarily used to treat anginal chest discomfort. It is now licensed by the FDA for the acute alleviation of an attack or the acute prevention of angina pectoris caused by coronary artery disease.

Nitroglycerin is used to treat coronary artery disease-related angina (chest pain). This medication can also be used to treat an existing angina attack. Nitroglycerin is a common treatment for heart problems. It's the go-to medication for people suffering from angina pectoris, who take it as a sublingual tablet or an oral spray.

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448 K is the final temperature of the water.

The specific heat capacity is defined as the quantity of heat (J) absorbed per unit mass (kg) of the material when its temperature increases by 1 K (or 1 °C), and its units are J/(kg K) or J/(kg °C).

Given,

the mass of Na is 23 g

The volume of water = 293 cm3

Mass of water = 293 g

Total solution mass = 23 g + 293 g = 316 g

Specific heat capacity of water = 4.18 J/Kg

The equation relating mass, heat, specific heat capacity and temperature change is:

q = mcΔT

197 kJ = 316 g x 4.18 J/Kg x ([tex]T_{finals} - T_ {initial}[/tex])

197 kJ = 316 g x 4.18 J/Kg x ( [tex]T_{finals}[/tex]-298 K)

0.1491429956 x 1000 =  [tex]T_{finals}[/tex]-298 K

149.1429956 + 298 = [tex]T_{finals}[/tex]

447.1429956 = [tex]T_{finals}[/tex]

448 K = [tex]T_{finals}[/tex]

Hence, 448 K is the final temperature of the water.

A high specific heat capacity means that it can store a large amount of thermal energy for a small change in mass or temperature.

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A more strong base is added until the equivalence point is reached. The ph of this solution at the equivalence point if the total volume is 57. 0 mill is 9.8

The potential of Hydrogen is what pH is formally known as. The negative logarithm of the concentration of H+ ions is known as pH. Thus, the definition of pH as the amount of hydrogen is provided. The hydrogen ion concentration in a solution is described by the pH scale, which also serves as a gauge for the solution's acidity or basicity.

The pH scale determines how acidic or basic water is. The range is 0 to 14, with 7 representing neutrality. Acidity is indicated by pH values below 7, whereas baseness is shown by pH values above 7. In reality, pH is a measurement of the proportion of free hydrogen and hydroxyl ions in water.

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Answer:

An amide.

Explanation:

Amides are functional groups, in which a carbonyl atom is linked by a single bond to a nitrogen atom and either a hydrogen or a carbon atom. These defining traits single this functional group out as an amide.

Answer:

I think it involves the use of extractive distillation but I'm not sure.

Still hope it helps:-)

The physical property is used to separate cyclohexanone from any unreacted cyclohexanol is distillation.

The process for separating cyclohexanone from cyclohexanol comprises the following steps

1. reacting a mixture of ketone and alcohol with an organometallic compound M(X)n to form compound HX, wherein M is chosen from aluminium, titanium and boron, where n is the valance of a M, X denotes equal or different organic group chosen from alkyl group and electric group having up to 10 carbon atom

2. liberating the newly formed compound HS from the reaction mixture by distillation

3. separating the ketone from the organometallic compound formed by reaction between M(X)n and the alcohol in the mixture.

Thus, we concluded that above compound is seprated by forming organometallic compound.

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The formal charge in the central metal atom Nitrogen atom is O.

           Structure      O=N=f    formal charge on N = 0

Formal charge in a Lewis shape, for every atom, you need to count how many electrons. count number all of its lone pair electrons, and 1/2 of its bonding electrons. The difference among the atom's range of valence electrons and the range it owns is the formal rate

Nitrosyl fluoride is used as a solvent and as a fluorinating and nitrating agent in natural synthesis. It has additionally been proposed as an oxidizer in rocket propellants.

The guideline or method for assigning formal rate to atoms in Lewis systems is the subsequent: Formal fee = number of valence electrons - variety of lone-pair electrons + 1/2 range of bonding electrons.

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CH3OH doesn't form ions in an aqueous solution.

Water and one or more dissolved substances make up aqueous solutions. In an aqueous solution, solids, gases, or other liquids may dissolve. Examples of watery solutions include coke, seawater, rain, acid, base, and salt solutions. A solution that is not an aqueous solution is any liquid that does not contain water.

Solutions that contain water as the solvent are known as aqueous solutions. Water is a great solvent, but not everything will easily dissolve in it. The term "aqueous" in a chemical equation designates a material in water. For instance, adding sodium hydroxide solution to diluted hydrochloric acid results in the production of sodium chloride.

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The main problem is the release of heat and thereby reducing yield of Ammonia.

Chemical equilibrium is defined as the state of a reversible chemical reaction where there is no change in net amount of products and reactants involved in it.

What is an exothermic reaction?

Exothermic reaction is one of the chemical reactions that will produces heat during the formation of products.

At the chemical equilibrium, the chemical reaction will be as follows:

[tex]N_{2}[/tex] + 3[tex]H_{2}[/tex] → 2[tex]NH_{3}[/tex] + energy

The above chemical equilibrium equation indicates that energy will be released due to the reaction of nitrogen and hydrogen. The energy release increases the surrounding temperature and thereby it will reduce the yield of the ammonia. Thus it can be indicated as the major problem.

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According to the IUPAC convention, alkyl group names should be located at the end  of the name of the main chain.

IUPAC is a system of chemistry in which the naming of the organic compound has to be done based on their structure by following some rules given by the IUPAC system. Alkanes, alkenes and alkynes are the three major functional groups of organic chemistry.

The full form of IUPAC is the international union of pure and applied chemistry.

Alkyl groups are same as alkenes just the end name of both are different but both of then specifies the single bond in structure and name has to be written in last.

Therefore, according to the IUPAC convention, alkyl group names should be located at the end  of the name of the main chain.

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The grams of silver formed by the passage of 9,604 c through an electrolytic cell that contains a molten silver salt is 10.7g.

Acc. Faraday’s law of electrolysis,

W=(I×t×M) /nF

W=Faraday’s constant=96500

F=time M=molar mass

N=no. Of el.

It=9604C

Given,

Molar mass of silver=108g/mol.

n=1.

Then weight of silver deposited can be given as

W=(9604×108)/(96500×1)

= 10.7g

Thus we concluded that the silver deposited is 10.7g

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In the given reaction, Ag is acting as Lewis acid. the given statement is true.

A Lewis acid is a chemical substance with an empty orbital that can accept an electron pair from the a Lewis base to establish a Lewis adduct.

Because the silver atom has an open valence shell, AgCl is a Lewis acid. Lewis acid is an atom, ion, or molecule with an incomplete electron octet.

Even though Ag+ can accept an electron pair, it acts as a Lewis acid. It will then combine with chlorine and form AgCl.

Thus, the given statement is true.

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Answer:

C₃H₈ has a higher boiling point than C₂H₆

Explanation:

The boiling point is the temperature at which the intermolecular forces between molecules are overcome and the state of the substance changes from liquid to gas.

Since these are both hydrocarbons (molecules containing just carbon and hydrogen), the strength of their intermolecular bonds should be the same. However, since C₃H₈ is larger, it can form more of these intermolecular bonds. Thus, it takes more energy and a higher temperature to overcome the increased amount of forces.

A substance moving from an area of high concentration to an area in which it has a low concentration is moving btween two concentration gradient.

Diffusion can simply be defined as the movement of substances from a region of a high concentration to a region of lower concentration.

It is also the movement of substances from a region of a strong solution to a region of weak solution.

So therefore, a substance moving from an area of high concentration to an area in which it has a low concentration is moving btween two concentration gradient.

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The Celsius temperature of 100. 0 g of chlorine gas is 227.65 C.

Temperature is the measurement of the hotness or coldness of a body or substance or place.

Given, that the pressure is P = 800 mm Hg

Converted into pascals  1.066 X 10^5 Pa

The Volume is V = 55 l

Converted into meter cube 0.055 m^3

The number of moles of Cl2 gas will be calculated

weight / molecular weight  

100.0 / 71 = 1.408

From the ideal gas equation

PV = nRT

T = PV/RT

where R = universal gas constant = 8.314 J /mol K

Putting the values in the equation:

[tex]T = \dfrac{1.006 \times 10^-5 \times 0.055}{1.408 \times 8.314 } = 500.8 K.[/tex]

T is temperature = 500.8 K

The Celsius temperature is 500.8 K = 227.65 C

Thus, the temperature in Celsius is 227.65 C.

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The volume of the aqueous solution of sodium sulfate required is 153.85 mL.

The number of moles of the salt in the given mass is calculated as follows;

moles = reacting mass / molar mass

molar mass of  sodium sulfate = 142 g/mole

moles = (4.27) / (142)

moles = 0.03 mole

Concentration = moles/volume in liters

0.195 = 0.03/V

V = 0.03/0.195

V = 0.15385 liters

V = 153.85 mL

Thus, the volume of the aqueous solution of sodium sulfate required is 153.85 mL.

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Answer:

525 mmHg

Explanation:

If all other variables are held constant, you can find the pressure using Boyle's Law. The equation looks like this:

P₁V₁ = P₂V₂

In this equation, "P₁" and "V₁" represent the initial pressure and volume. "P₂" and "V₂" represent the final pressure and volume. You can plug the given values into the equation and simplify to find "P₂".

P₁ = 709 mmHg                      P₂ = ? mmHg

V₁ = 3.97 L                              V₂ = 5.36 L

P₁V₁ = P₂V₂                                                         <----- Boyle's Law

(709 mmHg)(3.97 L) = P₂(5.36 L)                      <----- Insert values

2814.73 = P₂(5.36 L)                                          <----- Simplify left side

525 = P₂                                                            <----- Divide both sides by 5.36

Answer:

pKb = 5

Explanation:

To find the pKb, you need to (1) calculate the pka (using the pKa equation) and then (2) calculate the pKb (using the relationship between the pKa and pKb).

(Step 1)

pKa = -log (Ka)

pKa = -log (1 x 10⁻⁹)

pKa = 9

(Step 2)

pKa + pKb = 14

9 + pKb = 14

pKb = 5

Dsm-5 includes gambling disorder as an addictive disorder, along with substance use disorders. This change is considered important because it suggest that people may become addicted to behavior net just substance.

Gambling disorder which involve repeated, problem gambling behavior. The behavior leads to problem for the individual families, and society.

The emotional and physical sign of gambling disorder are:

Gambling disorder make another kind of addiction that an individual uses to be able to deal with the situation. Start using the drugs alcohol to reduce the feeling of anxiety.

Thus from the above conclusion we can say that Dsm-5 includes gambling disorder as an addictive disorder, along with substance use disorders. This change is considered important because it suggest that people may become addicted to behavior net just substance.

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A conjugate acid is given by the acid-base theory of Bronsted–Lowry. The conjugate acid of a weak base, trimethylamine is ((CH₃)₃NH⁺) trimethylammonium ion.

A conjugate acid is a compound that has been formed when a base accepts the hydrogen or the proton ion from an acid. It can also be said that a hydrogen ion is added to a base.

The conjugate acid differs from the base by the addition of one proton ion to it. The reaction of a weak base, trimethylamine can be shown as,

(CH₃)₃N(aq) + H₃O⁺(aq) ⇌ (CH₃)₃NH⁺(aq) + H₂O(l)

Here, the trimethylamine compound has accepted a proton from hydronium to produce a conjugate acid, trimethylammonium cation, (CH₃)₃NH⁺.

Therefore, trimethylammonium (CH₃)₃NH⁺ is the conjugate acid of trimethylamine.

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Answer:

iron deficiency

Explanation:

The original molarity of an aqueous solution of ammonia whose pH is 11. 02 at 25°C is 0.556 M

Calculation ,

Given : pH = 11.5

[tex][H^{+} ][/tex] = [tex]10^{-11.5}[/tex]

[tex][OH^{-} ][/tex] = [tex]K_{w} /[H^{+} ][/tex] = [tex]10^{-14}[/tex]/  [tex]10^{-11.5}[/tex] = [tex]10^{-2.5}[/tex] M

Kb = [tex][NH_{4}^{+} ][OH^{-} ]/[NH_{4} OH][/tex] = [tex](10^{-2.5})^{2} /C[/tex] = 1.8×[tex]10^{-5}[/tex] M

C = 1/1.8 = 0.566 M

So, molarity of an aqueous solution of ammonia is 0.566 M

pH ia a measure of hydrogen ion concentration , a measure of acidity or alkalinity of the solution .pH scale usually range from 0 to 14 Aqueous solutions at 25°C witha pH less rhan 7 are acidic  , whereas , those with pH greater than 7 are basic or alkaline. pOH ia a measure of hydroxide ion concentration , a measure of  alkalinity of the solution .

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The equation for the formation of ethyl acetate from ethanol and acetic acid will be [tex]CH_{3} COOH (l) + C_{2} H_{5} OH(l)[/tex] ⇔ [tex]CH_{3} COOC_{2}H_{5} (aq) + H_{2}O (l)[/tex].

When ethanol reacts with acetic acid then it will form ethyl acetate.

Ethyl acetate was created through the esterification reaction between acetic acid and ethanol because once sulphuric acid would be present. Esterification is just the process by which a carboxylic acid reacts with an alcohol to create an ester.

In a chemical process known as acetoacetic ester synthesis, ethyl acetoacetate would be alkylated at the -carbon between both carbonyl groups before being transformed into a ketone, or more precisely, acetone with a -substituted carbon.

Therefore, the equation for the formation of ethyl acetate from ethanol and acetic acid will be [tex]CH_{3} COOH (l) + C_{2} H_{5} OH(l)[/tex] ⇔ [tex]CH_{3} COOC_{2}H_{5} (aq) + H_{2}O (l)[/tex].

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When using ion-selective electrodes, to compensate for a complex or unknown matrix, the  standard addition method can be used to determine the analyte concentration. Option D

Analytical chemistry is a science that deal with the measurement and detection of the accurate amount of a substance. Analytical chemistry plays a large role in environmental management as it helps in the determination of the levels of contaminants in a sample.

An ion selective electrode is used in analytical chemistry to measure the amount of a target ion by converting its activity into a measurable electrical signal.

Hence, when using ion-selective electrodes, to compensate for a complex or unknown matrix, the  standard addition method can be used to determine the analyte concentration.

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Answer:

1/2     ( the two answers given are not FRACTIONS)

Explanation:

Moles of  CH3OH   = 128 gm / 32 gm / mole   = 4 moles

Moles of water   72 gm / 18 gm /mole = 4

Mole fraction of CH3OH  =   4 / ( 4+4) = 4/8 = 1/2  

When the equation __[tex]NO_{2}[/tex] __[tex]H_{2} O[/tex] __[tex]O_{2}[/tex] → __[tex]HNO_{3}[/tex] is balanced, the coefficient of hno3 is 4.

An expression for a chemical reaction would be referred to as balanced if both the reactants as well as the products have an identical number of atoms with a total charge for each component of the reaction. In other words, two sides of the reaction have equal amounts of mass as well as charge.

The given unbalanced equation is  __[tex]NO_{2}[/tex] __[tex]H_{2} O[/tex] __[tex]O_{2}[/tex] → __[tex]HNO_{3}[/tex] .

It can be seen that the count of hydrogen in reactant side 2 on the other hand the count of hydrogen atom is 1.

By multiplying by 4 as the coefficient of  and [tex]NO_{2}[/tex]  and by 2 as the coefficient of water then equation will be balanced.

The balanced chemical equation will be expressed as:

4 [tex]NO_{2}[/tex]  + 2[tex]H_{2} O[/tex]  +[tex]O_{2}[/tex] → 4[tex]HNO_{3}[/tex] .

Therefore, when the equation __[tex]NO_{2}[/tex] __[tex]H_{2} O[/tex] __[tex]O_{2}[/tex] → __[tex]HNO_{3}[/tex] is balanced, the coefficient of hno3 is 4.

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Answer:

5.12 atm

Explanation:

Before you can use the Ideal Gas Law to find the pressure, you need to convert grams to moles (via molar mass).

Molar Mass (H₂): 2(1.008 g/mol)

Molar Mass (H₂): 2.016 g/mol

 1.8 grams H₂               1 mole
----------------------  x  ----------------------  =  0.893 moles H₂
                                 2.016 grams

The Ideal Gas Law equation looks like this:

PV = nRT

In this equation,

-----> P = pressure (atm)

-----> V = volume (L)

-----> n = moles

-----> R = Ideal Gas Constant (0.0821 L*atm/mol*K)

-----> T = temperature (K)

After converting Celsius to Kelvin, you can plug the given values into the equation and simplify to find the pressure.

P = ? atm                                R = 0.0821 L*atm/mol*K

V = 4.3 L                                T = 27 °C + 273.15 = 300.15 K

n = 0.893 moles

PV = nRT

P(4.3 L) = (0.893 moles)(0.0821 L*atm/mol*K)(300.15 K)

P(4.3 L) = 22.0021

P = 5.12 atm

**Based on my past experiences, I believe the constant (R) you provided may have been mistyped. Instead of 0.821, I used 0.0821.**