Draw Lewis structures for each molecular formula. a. C2H4Cl2 (two isomers) b. C3H8O (three isomers) c.C3H6 (two isomers)

One degree Fahrenheit is equal to -17.22 degree Celsius.

The Fahrenheit scale is a thermodynamic temperature scale proposed by the German physicist Daniel Gabriel Fahrenheit (1686 – 1736) in 1724.

On this scale, the freezing point of water is 32 degrees Fahrenheit (written as 32 °F) and the boiling point of water is 212 degrees Fahrenheit, so this temperature has a range of 180 degrees (212 – 32).

The Celsius scale is a temperature scale designed so that the freezing point of water is at 0 degrees and the boiling point is at 100 degrees at standard atmospheric pressure.

The scale got its name from the astronomer Anders Celsius (1701–1744), who first proposed it in 1742.

Temperature conversion formula from Fahrenheit to Celsius:

(°F - 32) × 5/9

So,

1°F = (1 - 32) x 5/9

= -17.2° C

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The lead-acid  battery used in truck and car batteries is depicted in the following cell diagram: The comma between PbO2(s) and pbSO4(s) indicates that the two solids are heterogeneously mixed, and the right

(a)The balanced net cell reaction is given below.

[tex]Pb(s)+PbO_2(s)+2H_2SO_4(aq) \rightarrow 2PbSO_4(s)+2H_2O(l)[/tex]

(b)The standard potentials for cathode and anode are as given below.

[tex]E^0_{anode}[/tex]=+1.685V

[tex]E^0_{anode}[/tex]-0.356V

[tex]E^0_{cell}=E^0_{cathode}-E^0_{anode}[/tex]=1.685V-(-0.356V)=2.041V

(c) [tex]\Delta G^0 =-nFE^0_{cell}=-2 \times 96500 \times 2.041=[/tex]-393913 J/mol = -393.9 kJ/mol

(d)[tex]E_{cell}=E^0_{cell}+\frac {0.0592}{2}log[H_2SO_4]=2.041 V+\frac {0.0592}{2}log10.0[/tex]=2.071V

(e) The number of lead-acid cells in a 12 V car battery = [tex]\frac {12}{2.071} \approx 6[/tex]

Two electrodes that are buried in a sulfuric acid electrolyte make up a lead-acid battery. In contrast to the negative electrode, which is fastened to a grid of metallic lead, the positive electrode is constructed of metallic lead oxide grains. Both flooded and valve-regulated lead-acid batteries fall within this category. Although less expensive than valve-regulated lead-acid batteries, flooded lead-acid batteries need more ventilation and maintenance. Due in large part to their portability and affordable price, lead-acid batteries are frequently employed in renewable energy systems. The low number of charging-discharging cycles, low discharge intensities, short lives, and slow charging rates of these batteries provide several difficulties.

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The Lewis structure for ethene that is CH2CH2 is that each carbon has four valence electrons, from which it's going to use 2 of the electrons from every to make a double bond among them.

Determine the overall range of valence electrons. Step 2: Write the skeleton shape of the molecule. Step 3: Use valence electrons to shape every bond withinside the skeleton shape. Step four: Try to fulfill the octets of the atoms through dispensing the last valence electrons as nonbonding electrons.For C2H4 you've got got a complete of 12 overall valence electrons.

Drawing the Lewis shape for C2H4 (named ethene) calls for the usage of a double bond. In a double bond pairs of valence electrons are shared (for a complete of 4 valence electrons). The electron dot shape of ethene, C 2 H four : The overall range of valence electrons gift in. Here the significant atom is carbon, while Hydrogen is selected because the aspect atom.

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The correct response is B, as blood spatter can be utilized to determine blood type. Everything but option B is implied by Locard's exchange principle. Blood contains of glucose

Blood is a bodily fluid found in humans and other vertebrates with circulatory systems that carries metabolic waste products away from cells while also delivering essential elements like nutrition and oxygen to the cells. Peripheral blood is another name for blood in the circulatory system. An essential component of forensic science research is Locard's exchange principle. It claims that when committing a violent crime, every criminal leaves a trail. It is the responsibility of the investigator to track down this trace evidence and reenact the crime.

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The problem's introduction's description of the wave, which is going in the +x direction, is accurate.

Due to the particles just on left side of the wave going upward and approaching their peak, the wave is traveling to the left. Alternatively, if the particles just on right are traveling up and the particles just on left are moving down, the wave is moving to the right.

When a wave's disturbance travels perpendicular to the wave's direction, the wave is said to be transverse. While the disturbance swings up and down, you might imagine the wave going from left to right. A water wave with up-and-down water movement as it travels across the ocean is an illustration of a transverse wave.

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Answer:

43.8 g of iron can be recovered

Explanation:

First get the mass of Fe3O4 in the ore:

80g Ore * (76 g Fe3O4 / 100 Ore) = 60.8 g Fe3O4

Then get number of moles of Fe3O4:

60.8 g Fe3O4 * 1 mol / 231.535 g = 0.262 mol Fe3O4

**231.535 g is the molar mass of Fe3O4

Then get number of moles of Fe:

0.262 mol Fe3O4 * (3 Fe / 1 Fe3O4) = 0.786 mol Fe

** 3 atoms of Fe in every Fe3O4

Finally convert moles of Fe to grams of Fe:

0.786 mol * 55.845 g/mol = 43.79 g Fe --round to 3 sig figs--> 43.8 g Fe

True. Fusion leads to more microstates ( degree of fusion). so, All entropies of fusion are negative.

Entropy is defined as the the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work. Because work is obtained from ordered molecular motion the amount of entropy is also a measure of the molecular disorder or randomness of a system. The entropy of fusion is the increase in entropy when melting a solid substance. This is almost always positive since the degree of disorder increases in the transition from an organized crystalline solid to the disorganized structure of a liquid.  The entropy of fusion is negative for helium-3 at temperatures below 0.3 K. Entropy of fusion is also negative for helium-4 at temperatures below 0.8 K.

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There are 23.1 hours taken to deposit.

Solution:

3600 Sec = 1hr

1 Sec = 3600

83500 = 83500 hr/3600 = 23.1 hr

Each bank has different rules, but you can expect most direct deposits to be in your bank account by midnight. This is because some financial institutions update accounts several hours after midnight. The bank must make the first $225 of the deposit available for cash withdrawal or check by the beginning.

The business day following the business day of the bank on which the deposit was made. Usually, the rest of the deposit will be available on his second business day. Pending deposits cannot be withdrawn. However, it will be credited to your account within 1-2 business days. To check the status of your deposit, choose the experience that best suits you below.

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Answer: Quick Meaning and Difference

Explanation: As an electron moves from one level of energy to another within an atom or artificial atom, it appears discontinuous as it "jumps" from one level of energy to another. It is a form of deexcitation, atomic transition or quantum leap, this occurs when electrons are excited or de-excited. while In an atom or artificial atom, an electron transitions from one energy level to another. The quantum jump involves abruptly switching between quantum states or energy levels within a quantum system. A transition from one energy level to another occurs when the system absorbs energy; a transition from one energy level to another occurs when the system loses energy. I'm not sure quantum jumps even exist at the moment. A quantum leap has been the subject of controversy among physicists for over a century. The answer is now in, and everyone was a little bit right. Basically, quantum leaps or jumps are energy level jumps made by orbiting electrons in an atom. Atoms create photons when electrons move to a lower energy level and absorb them when electrons move to a higher energy level or leave the atom (ionization).

There is zero plagirism in this entire paragraph so feel free to copy and paste this into whatever assignment you like.

If The Bond Angle Between Two Adjacent Hybrid Orbitals Is 180 Hybridization is Sp2.

A space object appears to follow an orbit as it moves around another space object. A satellite is a spacecraft that orbits the planet. A natural satellites that matches the Earth nor moon is one possibility. Moons are satellites in the orbits of numerous nations. A man-made satellite, such as the Space Stations, provides an additional choice.

The positions of the electrons are dictated by the entire molecule when several atoms unite chemically to form a molecule, combining the atomic orbitals into molecular orbitals. The molecular orbitals are occupied by the electrons of the component atoms. There are two electrons in each orbital, and their spins vary. An atom's orbital is the area of space where an electron resides.

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Shear force is the vertical force acting on the beam or any other structure while the bending moment is the consequence of the structure rotating. See the diagram in the picture. Shear and Moment diagrams are used to show the various effective forces acting on a beam. I provided an explanation below.

The acronyms SFD and BMD stand for the structure's applied shear force diagram and bending moment diagram, respectively. To acquire the necessary strength and durability of the structure, you must take into account the overall shear force and bending moment while designing or analyzing any structure.

Shear force is the algebraic total of all vertical forces operating on the structure. It may be under the influence of an upward or downward force. It has the Newton SI unit (N). SFD is the term for the shear force's visual depiction (Shear force Diagram). The term "bending moment" refers to the algebraic sum of all moments acting on the structure. It might be moving in a clockwise or counterclockwise motion. Its Newton-meter SI unit is used (N-m). BMD is the abbreviation for the bending moment's graphic representation (Bending Moment Diagram).

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As the term "peroxide" is used in Chapter 10 it can refer to RCOOCR structure.

Hydrogen peroxide solutions up to 9% in concentration are often safe when consumed; nonetheless, even a 3% solution is slightly irritating to nasal mucosa and might result in vomiting and diarrhea. Industrial-strength solutions (10%) when consumed induce systemic toxicity and have been linked to deaths.

The fact that oxygen is an anion and hydrochloric acid is a chemical substance is the main distinction between the two peroxides. The specific class of oxygen compounds known as peroxides has distinctive characteristics. Thenard, a French chemist, made the discovery of hydrogen peroxide in 1818.

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1) The Lewis dot structure of the cyanide ion (CN-) is as follows:

Cyanide ion (CN-):

C: N:

2) Electron configuration:

C: [He] 2s2 2p2

N: [He] 2s2 2p3

The hybridization state of the carbon and nitrogen atoms in the cyanide ion is sp.

3) In the cyanide ion, the sigma bonds are the single bonds between the carbon and nitrogen atoms, and the pi bonds are the double bonds between the carbon and nitrogen atoms. There are no non-bonding electrons in the molecule.

The cyanide ion has a total of 10 valence electrons, which are used to form bonds between the carbon and nitrogen atoms. The carbon atom forms a single bond with the nitrogen atom by sharing one of its 2p electrons, and the nitrogen atom forms a triple bond with the carbon atom by sharing three of its 2p electrons. This results in a linear molecule with a carbon atom bonded to a nitrogen atom, with both atoms having a single bond and a double bond.

The hybridization state of the carbon and nitrogen atoms in the cyanide ion is sp. This is because the carbon atom has two unpaired electrons in its 2p orbitals, and the nitrogen atom has three unpaired electrons in its 2p orbitals. These unpaired electrons form sigma bonds with each other, resulting in an sp hybridization state.

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Here, sodium is allowed to shift from 4p to 4s, and its wavelength is 2.214 m. A wave's wavelength is described as the characteristic that measures the separation between adjacent spots.

Calculations are made between the two succeeding waves. The Greek letter lambda () is used to represent it. Thus, the wavelength is defined as the separation between one wave's crest or trough and the following wave. The chemical element sodium has the atomic number 11 and the letter Na, which derives from the Latin natrium. It is a malleable, silvery-white, and extremely reactive metal. In group 1 of the periodic table, sodium is an alkali metal.

a change from 4p to 4s

As l = 1 for a 4p state and I = 0 for a 4s state, this transition is permitted because l = 1 - 0 = 1

4p (Ei) = 3.75 eV energy

Energy of 4s (E2) = 3.19 eV,

with = 1240 eV nm / (E2 - E1) = 2214 nm 2.214 m.

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The complete question is-

Is a 4p S 4s transition allowed in sodium? If so, what is its wavelength? If not, why not?

Thermal energy - found when internal energy is transferred

Electrical energy - found in the flow of electrical charges

Chemical energy - found in the bonds between atoms

Nuclear energy - found in the nucleus of an atom

Major product: The product that is produced in the greatest amount in a chemical reaction.

What are chemical reactions?

A chemical reaction is the process of chemically transforming a set of chemicals into another chemical. Classically, chemical reactions involve changes that affect only the positions of electrons in forming and breaking chemical bonds between atoms, without changes in the nucleus (no changes in the elements present), often , which can be written as a chemical equation. Nuclear chemistry is a subfield of chemistry that deals with chemical reactions of unstable radioactive elements in which both electronic and nuclear changes can occur.

The substances that first participate in a chemical reaction are called reactants or reagents. A chemical reaction is usually characterized by a chemical change, usually resulting in one or more products with different properties than the reactants. Reactions often consist of a series of individual steps, so-called elementary reactions, and information about the exact process is part of the reaction mechanism. Chemical reactions are described using chemical formulas that symbolically represent starting materials, final products, sometimes intermediates, and reaction conditions.

Therefore, Major product: The product that is produced in the greatest amount in a chemical reaction.

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Complete question is: What is a major product? draw the major product for each of the following reactions?

There are one atom in the center and four atoms at each of the four corners of the (100) plane.

The unit cell contains one-fourth of each corner atom and the complete middle atom, making the total number of atoms on the (100) plane inside the cell N100 = 4 (1/4) + 1 1 = 2.

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A solute's solubility is the greatest amount of that solute that can dissolve in a solvent at a given temperature and pressure. The moles of solute per volume (mol/L) is other common ways to express solubility.

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Ch3oh Ch3oh substances is a liquid at room temperature.

A sample of substance is considered to be liquid if it takes on the shape of the container in which it is contained and develops a distinct surface when gravity is present. We now turn our focus to three distinctive qualities of liquids that directly relate to the type of intermolecular interactions: surface tension, capillary action, and. The term "liquid" is also used to refer to the state, or condition, of matter having this property. viscosity. Although a liquid has a predetermined volume, its shape is not fixed. Blood, oil, and water are a few examples of liquids. A state of matter known as a liquid has a defined volume but no set shape. To put it another way, a liquid assumes the shape of its container.

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The chemical symbol for the anion is Ar+2. The ion has 20 electrons. There are 2 2s electrons are in the ion.

Ar+2 is the atomic anion.

The anion electrical structure is as follows:

1s2,2s2,2p6,3s2,3p6,3d2

For an electrically neutral atom, the number of electrons is equal to the number of protons.

The atoms in this instance have gained two electron and are now anion.

As a result, the atom's electrically neutral state is denoted as follows:

1s² 2s² 2p⁶ 3s² 3p⁶

The neutral atom's number at atomic structure will be  2 + 2 + 6 + 2 + 6 = 18

As a result, since it gained 2 electron, the element is Argon , and the ion's symbol is Ar+2.

1s2,2s2,2p6,3s2,3p6,3d2 is the ion's electrical configuration. Since it lost one electron, the ion's total number of electrons is now

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the energy of every photon in the list below, expressed in kilojoules per mole 2.362*10^7 KJ/mol,4.948*10^-7 KJ/mol,4.517*10^-7 KJ/mol

1) Given:

f = 5.92*10^19 s-1

Find energy of 1 photon first

use:

E = h*f

=(6.626*10^-34 J.s)*(5.92*10^19) s-1

= 3.923*10^-14 J

Energy of 1 mol = energy of 1 photon * Avogadro's number

= 3.923*10^-14*6.022*10^23 J/mol

= 2.362*10^10 J/mol

= 2.362*10^7 KJ/mol

2)Given:

f = 1.24*10^6 s-1

Find the energy of 1 photon first

use:

E = h*f

=(6.626*10^-34 J.s)*(1.24*10^6) s-1

= 8.216*10^-28 J

Energy of 1 mol = energy of 1 photon * Avogadro's number

= 8.216*10^-28*6.022*10^23 J/mol

= 4.948*10^-4 J/mol

= 4.948*10^-7 KJ/mol

3)Given:

[tex]\lambda[/tex] = 2.65*10^2 m

Find the energy of 1 photon first

use:

E = h*c/l[tex]\lambda[/tex]

=(6.626*10^-34 J.s)*(3.0*10^8 m/s)/(2.65*10^2 m)

= 7.501*10^-28 J

This is the energy of 1 photon

Energy of 1 mol = energy of 1 photon * Avogadro's number

= 7.501*10^-28*6.022*10^23 J/mol

= 4.517*10^-4 J/mol

= 4.517*10^-7 KJ/mol

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A 10.0 g piece of metal is placed in an insulated calorimeter containing 250.0 g of water initially at 20.0 °C. If the final temperature of the mixture is 25.0 °C, the heat change of water will be 5230 J.

Weight of metal = 10.0 g

Weight of water = 250.0 g

Initial temperature of water (Ti) = 20.0 °C

Final temperature of water (T2) = 25.0 °C

The specific heat capacity of water is 4.184 J/g.°C

We can calculate the heat change of water by the following equation;

    Q = mwater × Cwater × (T2-Ti)

    Q = 250.0 g × 4.184 J/g.°C × (25.0 - 20.0) °C

    Q = 5230 J

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The transport of glucose from the blood to the cell is accomplished by Facilitated diffusion mechanism .

The process of spontaneous passive transport (as opposed to active transport) of molecules or ions across a biological membrane by certain transmembrane integral proteins is known as facilitated diffusion (also known as facilitated transport or passive-mediated transport). Due to the fact that it is passive, facilitated transport does not directly require chemical energy from ATP hydrolysis during the transport step itself. Instead, molecules and ions travel along their concentration gradient, indicating the fact that the process is diffusive.

Simple diffusion and facilitated diffusion are different in a number of ways.

The carrier protein or membrane-embedded channel must bind to the cargo molecularly for the transport to take place.

In contrast to free diffusion, which is linear in the concentration difference, the rate of assisted diffusion is saturable with regard to the concentration difference between the two phases.

Due to the presence of an active binding event, the temperature dependency of assisted transport differs significantly from that of free diffusion, where the influence on temperature is minimal.

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All of the atoms in the Lewis structure of CHCl3 have a formal charge of zero.

Since there are no H-atoms directly connected to O in dimethyl ether (CH3OCH3), ethers cannot form an H-bond. Due to the stearic repulsion of the R-groups in ethers, the H-bond formed with the O-atom of ether is extremely weak even when ether is combined with polar solvents like H2O or H2O2.

Acetone's main atom is the red-hued carbon. A double bond and two single bonds make up the three electron groups that make up this carbon. Acetone has a trigonal planar structure with 120o bond angles, in accordance with All of the atoms in the Lewis structure of CHCl3 have a formal charge of zero.

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Ester hydrolysis by the SN1 pathway is acid-catalyzed and reversible. By protonating carbonyl oxygen and making carbonyl carbon more vulnerable to nucleophilic attack, acid catalysts hasten the process.

An ester is hydrolyzed by acid to produce an alcohol and a carboxylic acid. An ester undergoes basic hydrolysis, yielding an alcohol and a carboxylate salt. Esters are hydrolyzed by acids in a pseudo-first order process.

H2SO4+H2O → HSO4 −+H3O+

With the addition of the components of water, a protic acid is employed to catalyze the breaking of a chemical bond by a nucleophilic substitution reaction in the process known as acid hydrolysis in organic chemistry (H2O). For instance, glucose is produced when cellulose or starch are converted. Sulfuric acid hydrates itself in a very exothermic process. Concentrated sulfuric acid catalyze can boil and spit violently if water is added to it. It is usually preferable to add acid to water rather than water to acid.

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When an unstructured crystals polymer is annealed considerably below melting temperature, its tensile modulus increases.

The portion left over after dividing one integer by another is known also as modulus (or "modulus" or "mod"). For instance, 100 mod 9 is 1. due to the fact that 100/9 Equals 11 with a residue of 1. Here's another illustration: 14 modulo 12 equals 2. since the remainder is 2, and 14/12 = 1.

No matter what that's sign, a real number's non-negative value, or absolute value (or modulus), is | x |. For instance, five has an absolute value of five, and five less five also has an absolute value of five. To measure the elastic modulus, we often use megapascals (MPa) or gigapascals (GPa).

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Alkanes are the simplest family of hydrocarbons, compounds containing only carbon and hydrogen, and only carbon-hydrogen bonds and carbon-carbon single bonds. Alkanes are less reactive and have little biological activity. All alkanes are colorless and odorless.

What are the applications of 3-hexanol?

n-Hexanol is a colorless liquid with a fruity smell. It is used in the production of flavoring additives, pesticides, leather processing, preservatives, perfumes, plasticizers and other chemicals. n-Hexanol is included on the Hazardous Materials List as cited by the DOT and NFPA.

What are alkanes?

In organic chemistry, alkanes or paraffins are saturated acyclic hydrocarbons. In other words, alkanes are composed of hydrogen and carbon atoms arranged in a tree structure in which all carbon-carbon bonds are single. Alkane has the general chemical formula CₙH₂ₙ₊₂

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The order of basicity for these compounds is:

The basicity of a compound refers to its ability to donate a pair of electrons. In general, the more electronegative an atom is, the less basic a compound will be. The electronegativity of the atoms in a compound can be used to predict its basicity.

In the case of the compounds you listed, pyridine is the most basic because it has the least electronegative atoms. 3-nitropyridine is less basic than pyridine because it has a nitro group (-NO2), which is more electronegative than a hydrogen atom. Finally, 3-chloropyridine is the least basic because it has a chlorine atom, which is even more electronegative than a nitro group.

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The acid concentration of a sample of acid rain with a pH of 4.20 would be  0.000063 M.

What is pH?

The pH of a substance is the degree of acidity or alkalinity of a substance. It is mathematically expressed as:

pH = - log [[tex]H^+[/tex]]

Where  [[tex]H^+[/tex]] is the hydrogen ion concentration or molarity of the solution.

In this case, the pH is 4.20. Substituting into the equation:

4.20 = - log  [[tex]H^+[/tex]]

log  [[tex]H^+[/tex]] = - 4.20

       [[tex]H^+[/tex]] = Antilog -4.20

                = 0.000063 M

Thus, the concentration of the sample acid rai with a pH of 4.20 would be 0.000063 M

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The net combination of electron for the bond strength of a molecule ,  Bond order allows us to identify.

In chemistry, the strength with which a chemical bond keeps two atoms together is known as bond strength. The energy needed to break the bond is often given in units of kilocalories per mole. As the number of electron pairs in a bond between two atoms rises, so does the bond's strength. Thus, triple bonds are stronger and shorter than double bonds between the same two atoms, and double bonds are similarly stronger and shorter than single bonds between the same two atoms.

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