The most likely to decline is fluorine. High oxidizing substances are reduced by themselves and prefer to oxidize other substances.
Thus, fluorine has a greater potential for reduction than chlorine, bromine, and iodine. Due to low bond enthalpies and high fluorine electronegativity, there is a considerable possibility for reduction. Since reduction entails the gain of electrons, an electrode's propensity to do so is known as its reduction potential. The electrode potential is the equilibrium potential difference between the surrounding solution and the metal electrode. It can also be described as an electrode's propensity to lose or gain electrons. Positive electromotive force and spontaneous responses are characteristics of galvanic or voltaic cells.In a voltaic cell, the cathode is positive and the anode is negative. The cathode in a voltaic cell has a greater reduction potential than the anode.
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a sample of xenon gas occupies a volume of 5.01 l at 437 k. if the pressure remains constant, at what temperature will this same xenon gas sample have a volume of 1.83 l?
at 159.6 K temperature will this same xenon gas sample have a volume of 1.83 l
Calculation :
Initial voume(V₁)= 5.01 L
Initial Temperature = 437 K
Final Volume(V₂) = 1.83 L
Final Temperature(T₂) = ?
at constant Temperature,
Therefore,
[tex]\frac{V1}{T1} = \frac{V2}{T2}[/tex]
[tex]\frac{5.01 L}{437 K} = \frac{1.83 L}{T2}[/tex]
T₂ = [tex]1.83*\frac{437}{5.01}[/tex]
= 159.6 K
at 159.6 K temperature will this same xenon gas sample have a volume of 1.83 l
Temperature is a measure of hot or cold expressed on one of several scales, including Fahrenheit and Celsius. Temperature indicates the direction in which heat energy spontaneously flows. H. From hot body (high temperature) to cold body (low temperature).
The current temperature map shows the current temperature with contour lines every 5 degrees Fahrenheit. Temperature is a physical property of a system
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if we began with 32.0 grams of oxygen and all of the hydrogen that you need, how many grams of water can be made?
After using the Balanced equation the answer is The 36 gram of water can be made.
What is Balanced equation?
A balanced equation is a chemical equation in which the total number of atoms of each element on the left side of the equation is equal to the total number of atoms of that element on the right side of the equation. This means that the equation is balanced in terms of mass and charge, and all atoms are accounted for. A balanced equation is essential to ensure that the chemical reaction is accurate and that the correct amount of products are produced. Additionally, a balanced equation can help in the calculation of reaction rates and equilibrium concentrations.
The molar mass of O is 16g and Hydrogen is 1g in H2O there is one oxygen only but in question is given 32g of oxygen so, 2 moles of oxygen should be there so it will become 32g that means 2H2O so overall 2[2*1+16] = 36g.
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What is a transitioning process?
A transition process is the when the substances changes from the one states to the other states.
The phase transition is the process when substances changers its states. the substance changes between the three states in six ways are :
1) melting : when the substances changes from the solid states to the liquid states.
2) freezing : in this transition the liquid phase changes to the solid phase.
3) evaporating : In this phase transition the liquids changes to the vapor phase.
4) condensing : This phase transition occurs when the gas changes to the liquid.
5) sublimation : the process of changing the solid phase into the liquid phase.
6) deposition : in this transition the gas phase changes to the solid phase.
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magnesium crystallizes in a face-centered cubic unit cell. calculate the radius of the magnesium atom (in pm) if the density of a cubic unit cell of magnesium is 1.74 g/cm3.
In this magnesium crystallizes in a face-centered cubic unit cell, don't need density.
What is pure crystals ?
Having no grain boundaries and being continuous and unbroken to the sample's borders defines a material as a single crystal.
What is atom ?
An atom is a unit of matter that specifically identifies a chemical element. An atom is made up of a core nucleus that is encircled by one or more negatively charged electrons. The positively charged nucleus has one or more protons and neutrons, which are relatively heavy particles.
Density = z X molar mass/ no. X a³ (a= edge length)
but no need of this principle here
for FCC, 4r =[tex]\sqrt{2}[/tex]a
r= radius of atom a= edge length
r= [tex]\sqrt{2}[/tex]a/4
=[tex]\sqrt{2}[/tex] * 4.880 *10²/4
r= 169.7pm
or
r=1.697*10²pm
here no need of density
Therefore, in this magnesium crystallizes in a face-centered cubic unit cell, don't need density.
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Find ΔErxn for the combustion of biphenyl. The heat capacity of the bomb calorimeter, determined in a separate experiment, is 5.86 kJ/∘C.
ΔErxn for the combustion of biphenyl is - 6,392.73 kJ/mol.
The full question is in the attachment. The change in internal energy for the combustion reaction (ΔErxn) is equal to the heat energy in the bomb calorimeter.
ΔErxn for a total mass of biphenyl
ΔErxn = - q
ΔErxn = - C × ΔT
q = the heat energyC = the heat capacity = 5.86 kJ/°CΔT = the temperature changesΔErxn = - 5.86 × (29.4 - 25.8)
ΔErxn = - 5.86 × 3.6
ΔErxn = - 21.096 kJ
Calculate the number of moles for biphenyl.
n = m ÷ molar mass
Biphenyl (C₁₂H₁₀)n = 0.514 ÷ 154 = 0.0033 mol
ΔErxn for 1 mol of biphenyl
ΔErxn in terms g = ΔErxn ÷ n
= - 21.096 ÷ 0.0033
= - 6,392.73 kJ/mol
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A mystery element is found not to be a good conductor of heat and reacts similarly to sulfur when exposed to
a halogen. Which group on the periodic table is this unknown element most likely found?
There are various kind of elements that are present in periodic table. Some elements are harmful, some are radioactive, some are noble gases. Therefore, the element is oxygen.
What is periodic table?
Periodic table is a table in which we find elements with properties like metals, non metals, metalloids and radioactive element arranges in increasing atomic number.
Periodic table help a scientist to know what are the different types of elements are present in periodic table so that they can discover the new elements that are not being discovered yet.
To match properties with sulfur, elements should be in the same group to which sulfur belongs to. Element which is a good conductor of heat and reacts similarly to sulfur when exposed to a halogen is oxygen.
Therefore, the element is oxygen.
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Please help me answer this | QUICKLY PLS
A.Fossil fuel use will decrease as populations work to decrease emissions of greenhouse gases.
B.Coal use will show the greatest decrease due to the increased use of renewables for electricity production.
C.Even though hydropower use will decrease, the use of renewables as a whole will increase.
D.All of the above.
Fossil fuel use will decrease as populations work to decrease emissions of greenhouse gases. Coal use will show the greatest decrease due to the increased use of renewables for electricity production. Even though hydropower use will decrease, the use of renewables as a whole will increase.
What is fossil fuel ?An extracted and burned fossil fuel is a hydrocarbon-containing substance that naturally originated in the Earth's crust from the remains of extinct plants and animals. Coal, oil, and natural gas are the three primary fossil fuels.
When burned, fossil fuels release a lot of carbon dioxide. Climate change is caused by carbon emissions, which trap heat in the atmosphere. About three-quarters of the carbon emissions in the United States are caused by the burning of fossil fuels, primarily for the power and transportation sectors.
Thus, option D is correct.
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a gas cylinder contains 1.0 mole of helium at a temperature of 20 degrees celsius. a second cylinder contains 1.0 mole of neon at 20 degrees celsius. the helium atoms are moving with a higher average speed, but the gas pressure in the two containers is the same. explain how this is possible.
Summarizing this information we see that the helium atoms collide with the partitions 5√ time greater often, however every collision is 5√ instances weaker.
Consequently, the pressures exerted via way of means of the 2 exclusive gases are the same. Volume. Pressure is likewise suffering from the quantity of the field.
If the quantity of a field is decreased, the fueloline molecules have much less area wherein to transport around. As a result, they'll strike the partitions of the field greater often, and the stress increase.
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how does the difference between the ranges of the strong nuclear force and the coulomb force affect the makeup of each atom’s nucleus?
Each atom's nucleus is influenced by the nuclear force depending on how the strong nuclear force and the Coulomb force differ from one another. because heavier atoms have more neutrons than protons and the coulomb force has a larger sphere of action.
What is atom's nucleus?
A strong nuclear force acts on the neutrons and protons that make up an atom's nucleus. Unlike the coulomb or gravitational forces, this force is distinct. The strong nuclear force is the force that holds nucleons together. It is a powerful force with a limited range. The nucleons, or neutrons and protons, are drawn together by the same force. For smaller atomic nuclei, the nuclear force is stronger than the Coulomb force. At distances of roughly 0.8 femtometre.the nuclear force is very attractive between nucleons.
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Why is the transition phase important?
Answer:
Explanation:
The transition phase allows for full and extensive muscular regeneration and mental recuperation. It can last from 2-4 weeks, but sometimes needs to be longer if the athlete is experiencing overtraining symptoms.
NEED HELP ASAP!! FINAL EXAM
which of the following is an example of chemical change?
a. copper mixes with the air to form a greenish copper carbonate.
b. copper wire is a good conductor of electricity.
c. when heated to 100 degrees celsius, water boils.
d. after applying enough force, the board was broken in half
Answer:
An example of a chemical change is when copper mixes with the air to form a greenish copper carbonate. A chemical change is a type of change that involves a chemical reaction, in which the substances involved in the change are transformed into new substances with different chemical properties. In this case, when copper mixes with the air, it reacts with carbon dioxide and moisture to form a new substance called copper carbonate. This substance has a different color and chemical properties than the original copper, which indicates that a chemical change has occurred. In contrast, the other options you provided do not involve chemical reactions and are not examples of chemical changes.
Explanation:
an unknown hydrocarbon is subjected to elemental analysis. the results of this test show that the compound is 83.24% carbon and 16.76% h. with a molar mass of 72 g/mole, the molecular formula of this compound is:
The empiric molecular formula of this compound when an unknown hydrocarbon is subjected to elemental analysis is C4H9
C = 100.00 - 16.76 = 83.24% if H = 16.76%.
each percentage value by the corresponding atomic mass
H = 16.76/1 = 16.76
C = 83.24/12 = 6.94
Divide by a lesser number.
Remove fraction and multiply by 4 H = 9.64
C = 4 H = 16.76/6.94
= 2.41
C = 6.94/6.94 = 1
Empirical equation: C4H9
Octane, or (C4H9)2 (the hydrocarbon), could be the substance.
By calculating the number of moles of each element from its mass, empirical formulas are generated using empirically measured element masses. Obtaining subscripts for a possible empirical formula by dividing the molar amount of each element by its smallest molar amount.
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Which type of bond is most likely to form between phosphorus and chlorine?
The bond formed between phosphorus and chlorine will be Covalent Bond.
Both phosphorous and chlorine are located on the right side of the periodic table where nonmetals are located.
This means both elements are nonmetals with lower electronegativity gap,
So will form a covalent bond.
Covalent Bond: A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms.
A covalent bond is formed when the electronegativity difference of two atoms is too small for an electron transfer to occur to form ions.
The electronegativity difference between two atoms determines how polar a bond will be.
In a diatomic molecule with two identical atoms, there is no difference in electronegativity, so the bond is nonpolar or pure covalent.
In this case, chlorine is more electronegative than that of Phosphorous, making it polar covalent bond.
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What are 3 patterns in the periodic table?
an atom has a ground state valence shell electron configuration of ns2(n-1)d5. to which group of elements in the periodic table does it belong?
an atom has a ground state valence shell electron configuration of ns2(n-1)d5. group of elements in the periodic table does it belong Transition metals
The bulk of General Chemistry Lecture 26 is included in the material that follows. We continue talking about quantum numbers and how they are used in electron configurations in this lecture, as well as how electron configuration relates to the periodic features of the elements.
The description of the positions of the electrons around a nucleus is called an electron configuration. The number of electrons in each neutral atom is the same as the number of protons. Now, we'll arrange those electrons such that they stand around the nucleus in a way that shows their energy and the nature of the orbital in which they are housed.
Based on their energy, electrons are arranged into orbitals in a particular order. The Aufbau principle is the name given to this.
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if 128 molecules of glucoses were covalently joined together, what would be the resulting molecule(s)? a) a polysaccharide b) a polypeptide c) 127 water molecules . d) both a and c e) both b and c
The answer is option D)Both A and C. If 128 molecules of glucose were covalently joined together, the resulting molecule is a polysaccharide and 127 water molecules.
Polysaccharides also referred to as poly-carbohydrates, are the most common form of carbohydrates in food. They are long-chain polymeric carbohydrates consisting of monosaccharide units joined together by glycosidic bonds. This carbohydrate can react with water to produce its constituent sugars using amylase enzymes as a catalyst. Examples of polysaccharides include starch, cellulose, and glycogen. In the food sector, polysaccharides are employed as stabilizers and dietary fibre. Making yoghurt is another process where bacteria create polysaccharides. Polysaccharides often have one of two functions: either they store energy or maintain structural integrity. Energy is stored in highly compact polymers like starch and glycogen. Two linear polymers, cellulose and chitin, offer structural support in both plants and animals.
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a nuclear fission chain reaction where uranium-235 is bombarded with neutrons produces barium142, krypton-91 and which other type of product?
A nuclear fission chain reaction where uranium-235 is bombarded with neutrons produces barium142, krypton-91 and positrons type of product.
What is Nuclear Fission ?Nuclear fission is a process by which a large nucleus is split into two smaller nuclei, or fission fragments; nuclear fission takes place after the nucleus absorbs a neutron that usually is a product of another atom's radioactive decay.
The newly-formed fission fragments have highly unstable neutron to proton ratios, which makes them extremely radioactive.
What is nuclear fission chain reaction?A chain reaction refers to a process in which neutrons released in fission produce an additional fission in at least one further nucleus. This nucleus in turn produces neutrons, and the process repeats. The process may be controlled (nuclear power) or uncontrolled (nuclear weapons).
In the case of Uranium-235, nuclear fission creates a wide variety of fission fragments, such as
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a solution is prepared by dissolving 15.8 g of mgcl2 in 255 g of water. what is the mole fraction of cl- in this solution?
The mol fraction of Cl is 0.023.
What is mole?
The amount of substance in a system that contains the same number of atoms as there are in 0.012 kilogrammes of carbon 12 is referred to as a mole (symbol: mol).
What is mole fraction ?
A mixture's mole fraction is calculated by dividing the number of molecules of a specific component by the total number of moles in the mixture. It is a method of indicating how concentrated a solution is.
Change all to moles
mol of MgCl2 = mass MgCl2 / MW of MgCl2
MW of MgCl2 = 95.211 g/mol
mol of MgCl2 = 15.8 /95.211 = 0.1659 mol of MgCl2
mol of Mg+2 = mol of MgCl2 = 0.1659
mol of Cl- = 2 * mol of MgCl2 = 2*0.1659 = 0.3318
mol of water = mass water /MW water = 255/18 = 14.166 mol of water
total mol = mol of water + mol of Mg+2 + mol of Cl = 0.1659 +14.166 +0.3318= 14.6637
Then
mol fraction of Cl = mol of Cl- / total mol = 0.3318/14.6637 = 0.0226 = 0.023
Therefore, mol fraction of Cl is 0.023.
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100 POINTS WILL MARK BRAINLIEST PLEASE HELP
Answer:
B is the answer
Explanation:
Answer:
Accurate but not precise
Explanation:
Which has the largest atomic radius: magnesium (mg), silicon (si), sulfur (s), or sodium (na)? the smallest?.
Sodium is the element with the largest atomic radius compared to magnesium, silicon, and sulfur, while the smallest among these is sulfur.
Atomic radius of the indicated elementsMagnesium (Mg) 173 pmSilicon (Yes) 111 pmSulfur (S) 100 pmSodium (Na) 227 pmImportance of atomic radiusIdentifies the average distance between two nuclei of the same element linked together.This distance is measured in amstrong and pm, where 1 amstrong equals 100 pm.Through the atomic radius it is possible to determine the size of the atom, and as the energy level is higher, the atomic radius is greater.Learn more about atomic radius at https://brainly.com/question/13607061
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how does the current concentration of carbon dioxide in the atmosphere compare to concentrations in the past 800,000 years (from ice core data)?
The current concentration of carbon dioxide in the atmosphere is higher than at any point in the last 800,000 years.
An electric current is a circulation of charged particles, including electrons or ions, shifting thru an electrical conductor or space. Its miles are measured because of the net fee of drift of electric fee through a floor or into a managed extent.
The current is one of the most important and essential elements within electric and electronic technology. The contemporary flowing in a circuit may be utilized in an expansion of ways from generating warmness to inflicting circuits to replace, or information to be saved in an included circuit.
Current is decided by the number of electrons passing through a cross-section of a conductor.
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the inclusion of one or more d orbitals from the same principal energy level for hybridization is known as
Sp3d hybridization involves the mixing of 1s orbital, 3p orbitals and 1d orbital to form 5 sp3d hybridized orbitals of equal energy. They have trigonal bipyramidal geometry. The mixture of s, p and d orbital forms trigonal bipyramidal symmetry.
What is hybridization?
Hybridization, in the context of genomics, is the process by which two complementary single-stranded DNA and/or RNA molecules combine to form a double-stranded molecule. Binding relies on proper base-pairing between the two single-stranded molecules.
Therefore, Sp3d hybridization involves the mixing of 1s orbital, 3p orbitals and 1d orbital to form 5 sp3d hybridized orbitals of equal energy. They have trigonal bipyramidal geometry. The mixture of s, p and d orbital forms trigonal bipyramidal symmetry.
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what is the concentration of a solution formed by diluting 25.0 ml of a 3.2 m nacl solution to 135.0 ml?
The concentration of the solution created by diluting 25.0 ml of a 3.2 m nacl solution to 135.0 m is 0.59 M NaCl.
What exactly is the solution?A homogenous combination of one or more solutes that have been dissolved in a solvent is known as a solution. The material that a solute dissolves in to create a homogenous mixture is known as a solvent.
What does a mixture's solution mean?When two compounds are combined, they dissolve one another to form a solution. The term "solute" refers to the material that dissolves. Solvent is the name given to the material that does not dissolve. Salt water is a kind of solution.
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100 POINTS WILL MARK BRAINLIEST PICTURE BELOW
Answer:
D
Explanation:
it seems the most logical
Answer:
B
Explanation:
6.00 ml
PLEASE MARK AS BRAINLIEST
How many bonds will phosphorus form?
Answer:
In both the red and the black forms, each phosphorus atom forms three single bonds, which are spread apart sufficiently to be relatively strain free.
when does a weak acid buffer best? group of answer choices from one ph unit below its pka to its pka. from its pka to one ph unit above its pka. within one ph unit of its pka, both above and below. weak acids do not make good buffers at all.
In general, weak bases and their salts work better as buffers for pH values over 7, while weak acids and their salts work better for pH values below 7.
Calculate how much acid and base is required to make the appropriate pH and total buffer concentration. When a weak acid (HA) and its conjugate base (A-) are combined, the solution still contains both the acid and base components. This is because there are no responses that lead them to experience a large change in concentration. The value of the buffer capacity is directly correlated with the ingredient concentrations used, and it rises as they do. The pH of buffer solutions that are used to create this solution is equal to the pKa value of the acid the greatest buffering capacity.
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What is the solubility of potassium chloride at 20 C?
The amount of potassium chloride in the solution is represented as 33.49 w/V. The metal halide salt potassium chloride (KCl, often known as potassium salt) is made up of both potassium and chlorine.
It has a vitreous crystal look and is odourless or colourless. The material easily dissolves in water, and the flavour of its solutions is similar to salt. In a homogenous mixture of two or more components, a solution is defined as having particles less than one nanometer in size. Solutions come in many forms, such as sugar and salt solutions, soda water, etc. potassium chloride and metals combine to form metal halides. Others are covalently bound, while others, like sodium chloride, are ionic.
The amount of KCL in 100 ml is 34.7/103.61*100 = 33.49gm.
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The complete question is -
The solubility of potassium chloride at 20 ∘C is 34.7 g in 100 g of water. The density of the solution is 1.3 g mL −1. What is the w/V percentage of potassium chloride in the solution ?
two moles of a monatomic ideal gas is held at a constant pressure of 2200 pa and a volume of 3.2 m 3. what is the temperature of the gas in kelvin?
The temperature of the gas is 423.58K.
According to the Ideal Gas equation, which compares the ratio of a mole of gas's volume and pressure to that of the gas's thermodynamic temperature and gas constant. The equation is exact for an ideal gas and approximates real gases at low pressures. The Ideal gas law is the equation of the state of a hypothetical ideal gas.
PV = nRT
where P is the ideal gas's pressure.
The ideal gas's volume is denoted by V.
The ideal gas amount expressed in moles is known as n.
The fundamental gas constant is R.
The temperature is T.
Given, P =2200 pa, V= 3.2[tex]m^{3}[/tex], n= 2 mole, R= 8.31 [tex]Jmol^{-1}.k^{-1}[/tex].
[tex]= > PV = nRT[/tex]
=> 2200×3.2 = 2×(8.31)×T
=>[tex]\frac{2200*3.2}{2*8.31} = T[/tex]
=> T = 423.58K.
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What are the 3 most common types of hazardous materials found in construction work?
Silica dust, wood dust, and lower toxicity dust are the three most common types of hazardous materials found in construction work
While the majority of dust can cause lung ailments when inhaled over extended periods of time, some are toxic even when just a tiny amount is inhaled. Silica dust, wood dust, and lower toxicity dust are the three main forms of dust encountered on building sites. A buildup of silica dust particles in the lung tissue results in inflammation and scarring. Additionally, the particles make it harder for the lungs to absorb oxygen. Silicosis is the name of this illness. Silicosis is a chronic, disabling, and sometimes deadly condition that causes lifelong lung damage.
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A flexible container contain 37. 4 gram of oxygen ga at a preure of 890. 0 mmHg and a temperature of 55. 00 oC. What i the volume of the ga in the container in L?
After solving the equation the volume of the gas in the container is 26.6L.
What is ideal gas law?
Pressure times volume are equal to moles times the universal gas constant times temperature, according to the ideal gas law formula.
PV=nRT
where P is for pressure
n = number of moles, where V = volume
T stands for temperature.
R is the gas constant
Energy units per temperature increase per mole are measured by the gas constant R. It is sometimes referred to as the molar gas constant, the ideal gas constant, and the universal gas constant.
Depending on the units you use in your computation, the gas constant R has a different value.
To convert degree celcious to kelvin, 55degree C+273= 328K
To convert pressure from mmHg to atm= 890/760=1.17atm
Number of moles of oxygen= 37.04/32=1.16mol
V= nRT/P
=1.16*0.0821*328/1.17
=26.6L
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