The most likely reason for colloidal dispersion is __________.
[A] the Tyndall effect
[B] emulsion formation
[C] precipitation
[D] electrostatic repulsion
[E] coagulation

The compound is polar and the compound is T shaped.

We know that the Lewis structure of a compound tells us the way that electrons are arranged around a central atom in a compound. We can see that the Lewis structure would consist of the central atom and then the atoms that are surrounding the central atom of the molecule.

In any case, the valence electrons that surround each of the atoms in the compound would be shown as dots and they would surround the symbol of the elements to  which the atoms belong. We can now look up at the structure and be able to deduce what the compound can be able to look like.

The compound as shown is polar because of the fact that he compound is non symmetrical.

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Thermal expansion caused by a rising temperature of the ocean, and water being added by the melting of land-based ice, are causes of sea-level rise.

Temperature is the unit used to describe heat or cold. It illustrates the natural flow of heat energy from a hotter to a cooler body and can be expressed in terms of a variety of arbitrary scales (one at a lower temperature). An iceberg has a much higher total heat energy than a match, despite the fact that a match burns at a much higher temperature. Temperature and a thermodynamic system's energy are not the same thing. In contrast to extensive features like mass or volume, such as temperature is referred to as an intense property—one that is independent of the amount of material being addressed—along with pressure, density, and other similar qualities.

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The correct option is ,H2 + 2OH- → 2H2O .

Electrons are the lowest of the elements that constitute a molecule, and thus hold a negative charge. In a neutral atom, there are an equal number of ions and neutrons. One proton and one hydrogen are all that the hydrogen atom has. From the other hand, the uranium atom possesses 92 protons, which means 92 electrons.

Briefing :

Now we have introduced more hydrogen, so we need to balance hydrogen on the left side in acidic solution, we get

[tex]2H^{+} +H_{2} O_{2}[/tex] → [tex]2H_{2} O[/tex]

Now all the atoms are balanced but charge is not balanced. We see that the left side there are two positive charge. So, we balance the charge by adding two negative charge on the left side in the reaction, we get

[tex]2e^{-} +2H^{+} +H_{2} O_{2}[/tex] → [tex]2H_{2} O[/tex]

Therefore, the correct option is,

[tex]2e^{-} +2H^{+} +H_{2} O_{2}[/tex] → [tex]2H_{2} O[/tex]

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We can see from the images attached that a precipitate of silver chloride is formed as shown.

We know that a precipitate is a substance that that separates out of the solution as a solid. Thus if we have an aqueous phase reaction in which there is the combination of two of the reactants which are aqueous solutions. However, when the substnaces are mixed, we obtain a product that is solid. This solid product is whet we call the precipitate of the reaction that has just taken place.

As I said the precipitate would tend to separate out of the solution and then when that happens, we can see that the solid would be in a distinct phase from the rest of the solution.

In this case, the mixture of the sliver nitrate and the sodium chloride would produce a silver chloride precipitate that would separate out of the solution.

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The more stable conformer is the first conformation.

What is conformation?
Conformational isomerism, a type of stereoisomerism in chemistry, allows the isomers to interconvert simply by rotating around formally single bonds. Although any two atomic arrangements in a molecule that vary by rotation about a single bond can be referred to it as conformations, conformations which specifically correspond to local minima just on potential energy surface are referred to as conformational isomers as well as conformers. The transition states between both the local-minimum conformational isoforms are conformations that match local maxima on the energy surface. To interconvert each conformer to another during rotations about single bonds, one must pass a rotational energy barrier.

First Conformation:
H H H
Cl Cl H
Br H Br

Second Conformation:
H H Cl
Cl Br H
Br H H

The more stable conformer is the first conformation.

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SF2 is  the formula of the compound that would form between sulfur and fluorine , if the molecule contains only one sulfur atom and only single bonds are formed.

We employ the octet rule, which stipulates that all atoms in a compound are required to comply by, to confirm the correctness of any chemical structure. Every atom in the carbon IV oxide model exactly complies with the octet rule. The valence shell of each atom in the molecule is surrounded by eight electrons.

Its negative charge, which is 1.602176634 coulombs, the basic unit of electric charge, is equivalent to its own negative charge. The rest mass of an electron is 9.1093837015 10-31 kg, or 1/1,836 the mass of a proton. Because of this, an electron is thought to have far less mass than a proton or neutron, and its mass is ignored when calculating an atom's mass.

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ethanol acid and methanoic acid were used to prepare the ester compounds.

what are esters ?

Esters are carboxylic acid derivatives in which the hydrogen of the carboxylic acid (-COOH) has been replaced by an alkyl group (-R) such as methyl, ethyl, or a benzene ring such as phenyl. The ester functional group is denoted by the symbol -COOR. Esters are present in flowers and fruits, which give them their aroma. Esters are a particularly significant family of acid derivatives since they are used in a wide range of synthetic items such as fragrances, insecticides, solvents, and so on. An ester's name is made up of two parts. First, the alkyl group R' is directly linked to one of the oxygens in RCOOR'. The second portion is the name of the parent acid, with the '-ic acid' ending converted to '-ate' for ester.

ethanol acid and methanoic acid were used to prepare the ester compounds.

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The hybridization of the atomic orbitals in the central atom of a molecule lowers the overall energy of the molecule due to the maximization of the orbital overlap in the chemical bond.

The hybridization of the atomic orbitals is a process in chemistry associated with the combination of two different atomic orbitals in a hybrid orbital after the formation of a particular molecule.

Therefore, with this data, we can see that the hybridization of the atomic orbitals depends on the formation of molecules.

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The octahedral splitting diagram of the complex has been shown in the image attached to this answer.

We know that if a complex is said to posses the octahedral geometry, it means that the crystal field splitting of the complex is due to the presence of six ligands which acts as point charges.

The  octahedral splitting is common in the ions or the transition metal atoms that have a [tex]d^6[/tex] configuration. In the case of tungsten metal here, there are six electrons as we can see from the electron configuration of the atom; [Xe] 6s² 4f¹⁴ 5d⁴.

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The concentration of the NaOH solution is 0.20M.

What is concentration?
If you have strong concentration skills, you can direct all of your attention to the current situation. Concentration can also be used to describe something that is grouped together, as well as the strength or density of a solution. People are said to be concentrated when they are in a specific area in large numbers. There might be a concentration of artists in your city who live in the riverside warehouses. A substance that is present in large quantities relative to the volume is said to have a high concentration in a solution. For example, the Great Salt Lake contains very few fish due to high concentration of salt. You can say that you pay attention well if you possess good concentration skills.

The concentration of the NaOH solution can be determined by finding the point where the titration is complete.
This can be determined by looking for the point on the graph where the volume of HCl added is equal to the volume of the NaOH solution initially in the flask.
In this case, the volume of HCl added is equal to 100.0 mL, which corresponds to a pH of 7.
At this point, the concentration of the NaOH solution can be determined by taking the ratio of the concentrations of the two solutions, which is 0.20M/ NaOH = 100.0mL/ V NaOH.
Therefore, the concentration of the NaOH solution is 0.20M.

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Social engineering types of infiltration techniques does one open up to by posting sensitive personal information and details about one's workplace on social networking sites.

What is the which means social engineering?

Social engineering is an assault vector that is predicated closely on human interplay and frequently includes manipulating human beings into breaking regular safety techniques and satisfactory practices to benefit unauthorized get entry to systems, networks or bodily places or for economic benefit.

Is social engineering a cybercrime?

Social engineering is a manipulation approach that exploits human blunders to benefit personal information, get right of entry to, or valuables. In cybercrime, these “human hacking” scams generally tend to trap unsuspecting customers into exposing data, spreading malware infections, or giving get right of entry to constrained systems.

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The reaction results in the formation of salt and water, and the net ionic formula is often given by: H+ + OH- --> H2O

Give an illustration of what an ionic equation is:

The electrolyte in aqueous are expressed as dissociated ions in ionic equations, which are chemical equations. Example: 1) Ag+(aq) + Cl-(aq) AgCl >> Salt chloride(aq) + argent nitrate(aq) platinum chloride(s) + salt nitrate(aq) (s) 2) Hydrochloric acid + sodium (s) -> sodium chloride (aq) + hydrogen (g).

How is an ionic formula written?

You first must identify the ion and note its sign and charge before you can determine the formula for an anion. Then, after determining the anion's identity, note its symbol and charges. The two ions should then be combined to create an electrically neutral molecule.

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The standard enthalpy of formation for CH4, Fe, and Cl2 are all zero. The standard enthalpy of formation for N2 is not zero, as it is equal to -57.6 kJ/mol.

What is enthalpy?
A thermodynamic system's enthalpy, which is one of its properties, is calculated by adding the system's functional energy to the product of the its pressure and volume. It is a state function that is frequently used in measurements of chemical, biological, as well as physical systems at constant pressure, which the sizable surrounding atmosphere conveniently provides. The pressure-volume term describes the effort needed to create space for the system by displacing it's own surroundings in order to determine its physical dimensions. For solids and liquids under typical conditions, the pressure-volume word is very small, whereas it is only moderately small for gases. Therefore, enthalpy serves as a stand-in for energy throughout chemical systems; enthalpy differences are what are commonly referred to as bond, lattice, and solvation "energies" in chemistry.

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Middle-in, first-out is not a common cost flow assumption used in costing inventory.

Explain 3 cost flow assumptions?

Companies utilize the average cost flow assumption to determine the costs associated with terminating inventory, cost of goods sold (COGS), and inventory in storage. Over the course of the accounting period, all items sold from inventory are averaged, and the average cost is then applied to the items.

Know that FIFO, LIFO, and averaging are the three cost flow assumptions that are most common in the US. Recognize the purpose of the LIFO conformity rule and that the existence of this tax rule is a major contributor to the usage of LIFO in the United States.

Therefore, Option B is correct.

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9.1 x 10-4 M is the equilibrium concentration of Zn²⁺ in the given question.

What is the dissociation constant?

A dissociation constant is a particular kind of equilibrium constant used in chemistry, biochemistry, and pharmacology to measure an object's propensity to break down into its component parts, such as when a complex disintegrates into its component molecules or a salt disintegrates into its component ions.

Zn(OH)₄²⁻⇔  Zn²⁺  +  4(OH)⁻

0.0465         0             0

0.0465-x      +x         +4x

Kd=[Zn2+][(OH)-]^4/Zn(OH)42-

Hence the answer is 9.1 x 10-4 M.

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Answer:

which question do you need assistance with?

The theoretical yield is 5.154 g

What is P- aminophenol?

White, reddish-yellow, or light brown crystals or powder make up P-AMINOPHENOL. when exposed to light, becomes violet. (NTP, 1992) One of the three potential isomers of amino phenol is 4-aminophenol, which has a single amino substituent next to the phenolic -OH group. As a metabolite, it serves a purpose.

Given,

P- aminophenol = 6.944 g

M.W OF P- aminophenol = 109.15 g/mol

Acetic anhydride = 3.490 g

M.W of acetic anhydride = 109.09 g/mol

M.W of acetaminophen = 151.16 g/mol

M.W of acetic acid = 60.052 g/mol

STEP 1

Calculate the mole of a given reactant

Mole of p-aminophenol = 0.0636 mol

Mole of acetic anhydride = 0.0341 mol

STEP 2

Write the balanced chemical equation

           H2NC6H4OH + (CH3CO)2O → C8H9NO2 + CH3COOH

at t=o    0.0636 mol       0.0341 mol

at t-=t     0.02965mol      0 mol              0.0341 mol     0.0341 mol

here, we can see that 1 mole of p aminophenol reacts with 1 mole of acetic anhydride and gives 1 mol of acetaminophen and 1 mole of acetic acid.

Therefore acetic anhydride is a limiting reactant because it has less mole than p- aminophenol

So,

0.0341 mole of acetaminophen will form.

Theoretical yield of acetaminophen = mole X M.W = 0.0341 X 151,1 = 5.154g

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Answer:

if an element has atomic number of 15 then the atom has 15 electrons also.

Option (b)

Explanation:

remember the atomic number of an element is also the number of protons of that element, we know that protons have a positive charge, neutrons have no charge and electrons have a negative charge.

we also know that an element is atomically neutral, meaning it overall has no charge, this is because the positive proton attracts a negative electron and hence their charges cancel off.

this is why in all elements, the atomic number(proton number) will always be equal to the electron number.

Note the neutron number cannot be predicted this way, as far as I know, the neutron purpose is mainly to add Mass to the atom so that it can be more stable, though often times the neutron number is similar to the proton number also. You're not required to learn off atomic masses as far as I know because it will be given to you in the exams

The  Sodium chloride reacts with fluorine gas to produce solid sodium fluoride and chlorine gas is 2Na+F₂→2NAF.

What is Sodium chloride ?

One of the most prevalent minerals on Earth and a crucial nutrient for many animals and plants is sodium chloride (NaCl), also known as salt. Seawater and underground rock formations are two natural sources of sodium chloride.

What is fluorine?

The most reactive element in all of chemistry is fluorine (F), which is also the first member of the halogen family. Both fluorides and fluorides-containing compounds, both organic and inorganic, are referred to by the terms "fluoride" and its ionic form (F-), respectively.

∴2Na+F₂→2NAF

Therefore, Sodium chloride reacts with fluorine gas to produce solid sodium fluoride and chlorine gas is 2Na+F₂→2NAF.

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The volume of gas  is 32.84 L.

given that :

Volume V1 = 90 L

Temperature T1 = 39 °C

pressure P1 = 740 mmHg

Volume V2 = ?

Temperature T2  = 15 °C

pressure P2 = 780 mmHg

according to the ideal gas equation we get :

P1 V1 / T1 = P2 V2 / T2

V2 = (P1 V1 T2) / P2 T1

V2 = ( 740 × 90 × 15 ) 780 × 39

V2 = 32.84 L

Thus, A ga balloon ha a volume of 90. 0 liter when the temperature i 39 °C and the pressure i 740. 0 mmHg. it volume be at 15. 0 °C and 780. 0 mmHg is 32.84 L

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Ksp is 7.6×10^-9. Ksp,  the solubility product derives from the solubility expression CaF2 --> Ca2+  + 2F-

The solubility product constant,  Ksp ​, is the equilibrium constant for a solid substance dissolving in an aqueous solution. It represents the level at which a solute dissolves in solution. The more soluble a substance is, the higher the  Ksp  value it has.

Ksp = [Ca2+][2F-] / [CaF2]

However,  [CaF2(s)] , the concentration of a solid is a meaningless quantity.

Thus, Ksp = [Ca2+][2F-]

Given this expression, we simply fill in the blanks:

Ksp = (1.24×10−3)(2×1.24×10−3)2

=4×(1.24×10−3)^3
= 7.6×10^-9

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Ksp is 7.6×10^-9. Ksp,  the solubility product derives from the solubility expression CaF2 --> Ca2+  + 2F-

A solid substance dissolving in an aqueous solution has an equilibrium constant called the solubility product constant, Ksp. It shows the rate of solute dissolution in a solution. A substance's Ksp value increases with solubility.

Ksp = [Ca2+][2F-] / [CaF2]

However,  [CaF2(s)] , the concentration of a solid is a meaningless quantity.

Thus, Ksp = [Ca2+][2F-]

Given this expression, we simply fill in the blanks:

Ksp = (1.24×10−3)(2×1.24×10−3)2

=4×(1.24×10−3)^3

= 7.6×10^-9

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The Solubility cannot be calculated.

Solubility indicates the maximum amount of a substance that can be dissolved in a solvent at a certain temperature. Such a solution is called saturated. Divide the mass of the compound by the mass of the solvent and multiply by 100g to calculate the solubility in g/100g.

The solubility of ionic solutes does not always increase with increasing temperature. In exothermic solution reactions, solubility can decrease with increasing temperature. The number of moles of solute dissolved in a given volume of solution does not represent the solubility of the solution. They dissolve more readily and solubility increases with increasing temperature.

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The temperature increase of octane if the molar heat capacity of octane is 254.0 J/K•mol is 0.197K.

The temperature of a substance can be calculated using the following expression:

Q = mc∆T

Where;

According to this question, 0.07 moles of a sample of octane absorbed 3.5 kJ of energy. The temperature increase of octane if the molar heat capacity of octane is 254.0 J/K•mol. can be calculated as follows:

3.5 = 0.07 × 254 × ∆T

3.5 = 17.78∆T

∆T = 0.197K

Therefore, 0.197K is the temperature increase.

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For the combustion of 1 mole of diamond at room temperature, the standard entropy change is 6.22 J/K mol.

The reaction is given as :

C (diamond)  + O₂   ----->  CO₂

At room temperature the value of S°  is given as follows :

carbon, C = 2.38 J / Kmol

oxygen, O₂ = 205.2 J/Kmol

carbon dioxide, CO₂ = 213.8 J/Kmol

The standard entropy change is given as :

ΔS° = ∑S° product  - ∑ S° reactant

ΔS° = ( 213.8 ) - ( 2.38 + 205.2)

ΔS° = 213.8 - 207.58

ΔS° = 6.22  J / K mol

The standard entropy change for the combustion of 1 mole of diamond at room temperature is 6.22  J / K mol.

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Answer:

Chlorophyll

Explanation:

im pretty sure

A measure of how compact matter is is what density means. How much "stuff" is crammed into an area, to put it simply.

In science, density is defined as the ratio of an object's mass to volume. Mathematical and scientific density comparisons are done using a formula.

In disciplines, such as physics, the focus is on things and matter and relates the notion to the rules of nature.

It is a calculable and manipulable formula in mathematics. In other disciplines, such as social sciences, density relates with population. The amount of people in a specific land area produces the population density.

Therefore, A measure of how compact matter is is what density means. How much "stuff" is crammed into an area, to put it simply.

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The balanced chemical equation for the combustion reaction of heptane is:

[tex]C_7H_16+11O_2\longrightarrow 7CO_2+8H_2O[/tex]

The chemical equation in which the number of atoms of each type of element is equal on the reactant, as well as the product side of the equation, is known as a balanced chemical equation.

From the law of conservation of mass, the total mass of the elements on either side of the equation must be equal in a balanced chemical equation.

Given the combustion reaction of heptane can be represented as:

[tex]C_7H_16+11O_2\longrightarrow 7CO_2+8H_2O[/tex]

Therefore, the coefficients required to balance the chemical equation are 1, 11, 7, and 8.

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The molecular formula of the Allicin is, C₁₈H₃₀S₆O₃ and the empirical formula is C₆H₁₀S₂O

the molecular formula can be calculated as follows:

If a percentage is provided, we will assume that the entire mass is 100 grams.

As a result, each element's mass is equal to the percentage indicated.

C weighs 44.4 g.

H weighs 6.21 g.

S weighs 39.5 g.

O's mass is 9.86 g.

C has a molar mass of 12 g/mole.

H has a molar mass of 1 g/mole.

S has a molar mass of 32 g/mole.

O has a molar mass of 16 g/mole.

first, convert given masses into moles.

Moles of C =      mass C       =    44.4 g      = 3.7 moles

                    molar mass C       12 g/mole.

Moles of H =      mass H       =    6.21 g.      = 6.21 moles

                      molar mass           1 g/mole.

Moles of S =      mass S       =    39.5 g.      = 1.23 moles

                      molar mass          32 g/mole.

Moles of O =        mass O       =    9.86 g.      = 0.62 moles

                      molar mass          16 g/mole.

then we find the mole ratio by divide each value of moles by the smallest number of moles calculated.

For C = 3.7 moles = 5.96 ≈ 6

           0.62 moles

For H = 6.21  moles = 10.01≈ 10

           0.62 moles

For S = 1.23 moles = 1.98 ≈ 2

           0.62 moles

For O = 0.62 moles = 1

             0.62 moles

The ratio of C : H : S : O = 6 : 10 : 2 : 1

The Empirical formula is C₆H₁₀S₂O

The empirical formula weight = 6(12) + 10(1) + 2(32) + 1(16) = 162 gram/eq

Now we have to calculate the molecular formula of the compound.

Formula used :

n= molecular formula = 486 =3

    empirical formula     162

Molecular formula = (C₆H₁₀S₂O)₃ =C₁₈H₃₀S₆O₃

Therefore, the molecular of the compound is, C₁₈H₃₀S₆O₃

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