A positive ion forms when an atom loses one or more electrons in order to attain a configuration is a. true.
When an atom looses the electrons it forms the positively charged ion. This is because the atom is left with the less negatively charged electrons to balance positive charged. The positively charged ions are called as the cations. The example of the positively charged ion is given below :
The compound NaCl, when the Na loses 1 electron to attain the configuration and it becomes the positively charged ion as Na⁺. Thus when an atom loses one or more electrons it becomes positive ion.
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If 30.2 g of aluminum chloride is decomposed into its elements, how many grams of chlorine gas are produced?
The mass of chlorine gas that is produced in the decomposition of 30.2 grams of aluminum chloride is 24.1 g.
What is the mass of chlorine gas that is produced in the decomposition of 30.2 grams of aluminum chloride?The mass of chlorine gas that is produced in the decomposition of 30.2 grams of aluminum chloride is determined from the formula for the decomposition of aluminum chloride as follows:
2 AlCl₃ ---> 2 Al + 3 Cl₂
2 moles of aluminum chloride produce 3 moles of chlorine gas
The mass of chlorine produced from 30.2 g of aluminum chloride will be:
Molar mass of aluminum chloride = 133.5 g/mol
Molar mass of chlorine gas = 71.0 g/mol
Mass of chlorine produced = 30.2/133.5 * 3/2 * 71 g
Mass of chlorine produced = 24.1 g
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explain why the atomic packing factor of an fcc and hcp structure is the same and why a bcc structure is less.
The atomic packing factor of an fcc and hcp structure is the same because both have the same organization and number of atoms per unit cell. The atoms cannot fit as tightly together in the bcc arrangement as they can in the fcc or hcp layouts.
In the body-centered cubic unit cell, in addition to one atom in the cube's center, there are atoms at each of the cube's eight corners.
Atoms are situated at each of the cubic faces' corners and their centers are in the face-centered cubic structure. Alternating layers' hexagonal structures are altered so that their atoms line up with the gaps of the layer before them.
Similar to the fcc structure, the atoms from one layer nestle together in the open space between the atoms of the adjacent layer.
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mineral oil can be used in place of mercury in manometers when small pressure changes are to be measured. what is the pressure of an oxygen sample in mm of mineral oil if its pressure is 28.5 mm hg?
If an oxygen sample's pressure is 28.5 mm hg, its pressure in millimeters of mineral oil is 473.22 mm.
Mineral oil is a virtually tasteless, colorless, oily, and water-insoluble liquid. It can be found in lubricating laxatives, carrier oils, and cosmetics. It can be used to moisturize skin, treat dandruff, cradle cap, cracked feet, mild eczema, and other skin conditions, remove earwax, relieve constipation, and moisturize skin.
A manometer is a pressure-measuring tool. An ordinary simple manometer is made of a U-shaped glass tube that is partially filled with liquid.
In manometers, the pressure can be expressed as:
Pressure = gravity ×height × density
In this case, we know the height and density of mercury; and we're asked to calculate the height of oil:
Gravity × h of oil × d of oil = Gravity × h of Hg × d of Hg
h of oil × d of oil = h of Hg × d of Hg
h of oil × 0.88 g/mL = 28.5 mm Hg × 13.5 g/mL
h of oil = 437.22 mm oil
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the notation for sodium chloride, nacl, stands for one
The notation for sodium choride (NaCl) stands for one formula unit.
A formula unit is the chemical formula with the fewest number of elements from a set of molecular formulas with the same proportions of elements and ions. This is the smallest integer ratio of ions that can be represented in an ionic compound. NaCl is the formula unit for the ionic compound sodium chloride. Sodium chloride, also known as table salt, is an ionic compound with the chemical formula NaCl. In ionic compounds such as salt and NaCl, atoms (as ions) are not bound to specific neighboring atoms. Each chloride ion in a salt crystal is surrounded by six sodium ions. Similarly, six chloride ions surround each sodium ion. This attractive force of oppositely charged ions extends throughout the crystal. There is no separate binding of specific sodium ions to specific chloride ions. Therefore, the formula for sodium chloride is expressed as 1, the smallest integer ratio of Na and Cl ions. So NaCl is also a formula, but not a molecular formula.
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The complete question is:
The notation for sodium chloride, NaCl, stands for one:
1. molecule
2. crystal
3. formula unit
4. atom
Give the formula for tetrasilicon heptabromide.
The formula for tetrasilicon heptabromide is Si₄Br₇.
What is chemical formula?Chemical formula, also called molecular formula is a notation indicating the number of atoms of each element present in a compound.
The chemical formula of a substance reveals the type and number of elements in the compound. According to this question, a chemical compound named tetrasilicon heptabromide is given.
Based on the nomenclature of the compound, it can be said that it is made up of four atoms of silicon and seven atoms of bromine, hence, the chemical formula is given thus: Si₄Br₇.
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Rank a series of molecules by expected solubility in water based on polarity and hydrogen bonding. Some slightly soluble compounds are included in this exercise.
In terms of solubility, CH₃CH₂CH₂COOH is more soluble than CH₃CH₂CH₂CH₂OH, CH₃CH₂OCH₂CH₃, and CH₃CH₂CH₂CH₃.
The effectiveness of a substance's interactions with the solvent determines how soluble it is in another. As a result, the organic compounds that dissolve in water can interact with the liquid.
The order of solubility for the chemicals provided in the query is CH₃CH₂CH₂COOH is more soluble than CH₃CH₂CH₂CH₂OH, CH₃CH₂OCH₂CH₃, and CH₃CH₂CH₂CH₃. It is important to keep in mind that because carboxylic acids establish more intermolecular hydrogen bonds than alcohols, they are more soluble in water.
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Which compound has the most deshielded methyl protons in an NMR spectrum? a. tetramethylsilane b) methyl fluoride c. methanol d.methylamine
Answer:
Q 4) Desheilded proton;
Explanation:
when using the tare function on a balance, start by
When using the tare function on a balance, start by zeroing or taring the balance before adding the sample to be weighed.
The tare function, also known as the zero or reference function, is used to remove the weight of the container from the measurement. When using a tare function, the balance should be zeroed or tared first by placing an empty container on the balance and pressing the tare button. This sets the balance to zero and removes the weight of the container from the measurement. After the balance has been tared, the sample to be weighed can be added to the container, and the weight of the sample will be displayed on the balance. This ensures that the weight measured is only that of the sample and not the container.
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How many ions are produced from a 14.3 g sample of calcium nitrate
8.8 g that's not really the answer btw
What contains a triplet anticodon on one end and an amino acid on the other end?
An exclusive class of RNA molecule is known as a transfer RNA (tRNA). To match an mRNA codon with the amino acid it codes for is its duty. Consider it as a sort of molecular "bridge" connecting the two.
A group of three nucleotides known as an anticodon is present in each tRNA.
Specialized tools are needed for translation. A cell couldn't convert an mRNA into a protein without two pieces of molecular machinery, ribosomes and tRNAs, just as you wouldn't go play tennis without your racket and ball.
Translation is possible thanks to the structure that ribosomes offer. Additionally, they facilitate the process that joins amino acids to form a new protein.
Amino acids are transported by tRNAs (transfer RNAs) to the ribosome. They serve as "bridges," connecting an mRNA codon with the amino acid it codes for.
In RNA and protein-containing organelles called ribosomes, translation occurs. When amino acids are joined to form a protein chain, ribosomes coordinate translation and catalyse the process.
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Consider the following reaction:
C4H8(g) ---------> 2C2H4(g)
The following data were collected for the concentration of C4H8 as a function of time:Time(s) [C4H8](M)0 1. 00010 0. 91320 0. 83530 0. 76340 0. 69750 0. 637a. What is the average rate of the reaction between 0 and 10s?b. What is the average rate of the reaction between 40 and 50s?c. What is the rate of formation of C2H4 between 20 and 30s?
Th average rate of the reaction Is A) 8.7X10^ -3 MS^ -1 ,
B) 6.0x10^-3MS^ -1 c)The rate of formation of C2H4==1.4x10^-2ms^-1
PART-A
Average rate=change in concentration/change in time
=1000-0.913/(10-0)
=0.0087MS^ -1
=8.7X10^ -3 MS^ -1
PART-B
Average rate=0.697-0.637/(50-40)
=6.0x10^-3MS^ -1
Part-C
rate of reaction=1/2 rate of formation of C2H4
Rate of reaction=rate of disappearance of C4H8
rate of formation of c2h4=2xrate of disappearance of C4H8
=2x(0.835-0.763)/(30-20)
=0.0144
=1.4x10^-2ms^-1
C2H4 ethylene is a highly flammable, scentless, noncorrosive gas with a pleasant smell. It is easily ignited, and a flame can easily flash back to the leak's source. Containers may explode if exposed to fire or heat for an extended period of time.
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scientific name for a base that dissolves in water
The scientific name for the base that dissolves in the water is called as the alkali
Alkalis are the bases, that dissolve in water [NaOH, KOH]. Therefore the solution is known as alkaline. A chemical substance that dissolves in the water and combines with acids to form salts, making acids weakly acidic. Alkali has a bitter taste and turns certain dyes blue. Some bases can help the body function as it should. Common Alkali Uses Sodium hydroxide is used in the manufacture of paper, detergents, and soaps. Potassium hydroxide is used by farmers to make acidic soil more alkaline so that plants can grow better, and is also used as an electrolyte in alkaline, Ni-Cd, and Ni-MH batteries.
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which would have the fastest rate of evaporation? why did you make this choice by referring to the intermolecular forces each would experience?
A liquid with a higher surface area to volume ratio would have the fastest rate of evaporation.
The molecules on the surface of a liquid with a higher surface area to volume ratio would experience a stronger intermolecular force from the surrounding air molecules, which would cause them to evaporate faster than a liquid with a lower surface area to volume ratio.
The rate of evaporation of a liquid is determined by the balance between the intermolecular forces between the molecules in the liquid and the surrounding air molecules. The stronger the intermolecular forces from the air molecules, the faster the rate of evaporation.
A liquid with a higher surface area to volume ratio would have more molecules exposed to the air molecules, which would increase the intermolecular forces on the surface molecules and cause them to evaporate faster. This is because the higher surface area of the liquid would allow more air molecules to come into contact with the liquid molecules, which would increase the strength of the intermolecular forces.
Therefore, a liquid with a higher surface area to volume ratio would have a faster rate of evaporation.
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noble gases are unreactive because they have ______.
The noble gases are unreactive because they have the fully filled outer most orbital with the eight electrons.
The noble gases have the fully filled outer most orbital. The configuration of the noble gases is stable configuration. The last shell or the outermost shell contains the 8 electrons and it fulfil the octet rule. This is the reason that the noble gases are very unreactive. They are stable and have the minimum energy.
The noble gases have not need to gain the electrons and to loose the electrons because they are already very stable and no need to combine with others.
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hydrogen bonds are select one: a. weak chemical bonds that hold together atoms within a molecule. b. strong chemical bonds that hold together atoms within a molecule. c. weak chemical bonds that hold separate molecules together. d. strong chemical bonds that hold separate molecules together.
Hydrogen bonds are (c) weak chemical bonds that hold separate molecules together.
Not to be confused with a covalent link to a hydrogen atom, hydrogen bonding is a unique form of dipole-dipole attraction that occurs between molecules. It comes about as a result of the attraction between two extremely electronegative atoms, such as N, O, or F, and a hydrogen atom that is covalently bound to one of them.
Although hydrogen bonds individually are weak and easily broken, they are present in very high quantities in water and organic polymers, where they combine to provide a powerful force. The DNA double helix is held together by hydrogen bonds as well.
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Identify the safety equipment designed to deal with each emergency listed. cuts or minor burns _____ chemicals on clothes _____
chemicals in eyes _____
large fire on the benchtop _____
fire on a person, ______
The equipment designed to deal with emergency for cut or minor burns is first aid kit . chemicals on clothes safety shower. chemicals in eyes eye wash station. Large fire on the benchtop fire extinguisher. Fire on a person Fire blanket.
First aid kit used for minor cuts or burns. The safety shower is located next to the lab entrance. When pull down the handle a supply of water will be falling down to flush off the entire body and clothing in case of large serious chemical splashes. Eye wash station are always located below the safety shower. Each is connected to a length of pull out hose. when you pull the handle a small fountains of water are directed upward the face. Fire extinguisher is used in case of large fire or small fire. Fire blanket is stored inside a red box attached to the wall next to the fire extinguisher. The blanket is there to be used on clothing that caught fire. These are the safety equipment's used in the laboratory.
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PLEASE ANSWER NOW!!!!!!
Answer:
d
Explanation:
trust
how many grams of hydrogen are found in two moles of water, H2O?
4.032 g of hydrogen are found in two moles of water.
In order to determine how many grams of hydrogen are found in two moles of water (H2O), we must use the following equation:
1 mole of H2O = 2 moles of hydrogen atoms = 2(1.008 g/mol) = 2.016 g of hydrogen.
Therefore, two moles of water, H2O, would contain 4.032 g of hydrogen.
The molecular formula of water is H2O, meaning there are two hydrogen atoms for every one oxygen atom.
The molar mass of hydrogen is 2.016, so for every mole of water, there are two moles of hydrogen.
By multiplying two moles of hydrogen (2 x 2.016) by the number of moles of water (2), the total amount of hydrogen in two moles of water is 4.032 grams.
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900 ml of water is added to 100 ml of a 0.1 m solution. what is the new concentration?
900 mL of water are added to 100 mL of 0.1 M solution, resulting in a new concentration of 0.01 M.
Molarity is defined as the number of moles of solute divided by the volume of solution in litres.
If Molarity is 0.1 M, then
Given that the starting volume was 100 mL (0.1 L), 0.1 = n÷0.1, and n = 0.1×0.1 (0.01 moles),
Final volume is now equal to 900 + 100 = 1000 mL = 1 L.
Final molarity is equal to the sum of the moles of solute and the final volume of the solution in litres, or 0.01 ÷1 = 0.01 M.
As a result, after adding 900 mL of water to 100 mL of 0.1 M solution, the resulting concentration is 0.01 M.
A solution's concentration is an indicator of how much solute has dissolved in a certain volume of solvent or solution. When there is a significant amount of dissolved solute in a solution, it is said to be concentrated.
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What are the coefficients when this equation is balanced explain
The balanced equation will be:
Cu + 2 AgNO3 ----> 2Ag + Cu(NO3)2
The balancing of equation is done to satisfy the law of conservation of mass. This law states - "mass can neither be created, nor be destroyed". Thus, the mass of the element in the equation cannot be created or destroyed, it is just shifted.
The answer is 1,2,2,1; the first option.
the accepted value and the experimental value do not agree. if the calorimeter leaked heat energy to the environment, would it help account for the discrepancy between the values? explain
magnesium has three stable isotopes, 24mg (23.985042 amu), 25mg (24.985837 amu), and 26mg (25.982593 amu). the relative abundance of 24mg is 79%. what is the percent relative abundance of 25mg?
The stable magnesium isotope has a nuclear spin of 5/2, a 10.0 atom percent natural abundance, and a relative atomic mass of 24.985837 amu.
Isotopes are atoms with the same number of protons but differing numbers of neutrons. The quantity of a substance is determined by mass. It is expressed as a kilogram or gram. The mass of an element's isotopes is known as the average mass. It can be computed by multiplying an isotope's mass by its natural abundance.
The mass that is in relation to a substance that is regarded as standard is called the relative mass. Relative mass in chemistry is equivalent to one-twelfth the mass of the C-12 isotope].
Average atomic mass is equal to (mass of the first isotope times its percent abundance) plus (mass of the second isotope times its percent abundance).
replacing the specified values
Average atomic mass is equal to 0.7899 x 23.985 x 0.10 x 24.985 x 0.101 x 25.9825, or 24.305 amu.
Consequently, magnesium has an average atomic mass of 24.305 amu.
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Is sodium and oxygen an ionic bond?
Yes sodium and oxygen have an ionic bond when present in form of compound like Na2O.
What is Sodium?The chemical element sodium has the atomic number 11 and the symbol for sodium is (Na). Sodium is a delicate, silvery-white metal which is exceedingly reactive. Due to its placement in group 1 of the periodic table, sodium is an alkali metal. The only stable isotope of Sodium is 23Na . The free metal must be synthesized from compounds because it does not exist in nature.
Sodium has the following specifications:
Symbol: NaAtomic number: 11Atomic mass: 22.989769 uElectron configuration: [Ne] 3s¹Electronegativity: 0.93Discoverer: Humphry DavyTo know more about Sodium Visit
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1.6 mol hcl and 2.5 mol naoh react according to the equation. calculate the amount in moles of h2o formed.
When 1.6 mol HCL and 2.5 mol NaOH react according to the equation ten 4 moles of H2O will form.
The reaction between 1.6 mol of HCl and 2.5 mol of NaOH is given by the following equation:
HCl + NaOH → NaCl + H2O
This equation tells us that for every mole of HCl that reacts with NaOH, one mole of H2O will be formed. Since we have 1.6 moles of HCl and 2.5 moles of NaOH, we can calculate the amount of H2O formed in the reaction by multiplying 1.6 and 2.5.
1.6×2.5=4
This works out to be 4 moles of H2O formed. Therefore, when 1.6 mol of HCl and 2.5 mol of NaOH react, 4 moles of H2O are formed.
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Question 11 (2 points)
Convert 0.057km to m
0.000057m
0.57m
☐ 57m
570m
The conversion of 0.057km to m in the given question would be 57 m.
What do you mean by Conversion?
Conversion is the process of changing a substance from one form to another. A chemical reaction, for example, can change a solid into a liquid, a liquid into a gas, or a gas into a solid. Conversion can also refer to the process of transforming a substance from one chemical state or form to another, for example, from an element to a compound or from an acid to a base.
Step 1: Write down the given conversion.
Given: 0.057 km to m
Step 2: Determine the conversion factor.
1 km = 1000 m
Step 3: Set up the conversion so the desired unit is on top.
1000 m/1 km
Step 4: Multiply the conversion factor by the given quantity.
1000 m/1 km x 0.057 km = 0.057 x 1000 m
Step 5: Simplify the expression.
0.057 x 1000 m = 57 m
Hence, option C is correct.
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Correct question:
Convert 0.057km to m
a. 0.000057m
b. 0.57m
c. 57m
d. 570m
What type of reaction is s8 o2 so3?
Exothermic combination and synthesis reactions include the oxidation of S8 by O2 to SO3.
A chemical process known as an oxidation-reduction (redox) reaction includes the exchange of electrons between two substances. Any chemical process in which the oxidation number of a molecule, atom, or ion changes by acquiring or losing an electron is referred to as an oxidation-reduction reaction. Many fundamental processes of life, such as photosynthesis, respiration, combustion, and corrosion or rusting, depend on redox reactions.
The number of electrons, e-, that an atom loses, gains, or seems to utilise while uniting with other atoms in compounds is referred to as the oxidation status (OS) of an element. There are seven rules to follow when figuring out an atom's oxidation state:
An solitary atom is in the oxidation state of zero.
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How many carbon atoms are in methane?
The number of the carbon atoms are in the methane is the one carbon atom.
The number of the atoms in the chemical compound is methane CH₄ is the one carbon atom and the four hydrogen atom. The methane is the simplest form of the hydrocarbon called as the alkane. The methane is the powerful greenhouse gas.
The number of the carbon atoms in the 1 mole of CH₄ , methane is the 6.022 × 10²³. The moles of the any substances can be determine by the mass divided by the molar mass. Therefore , the carbon atoms in the methane is the only one carbon atom.
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The difference between energy of product and energy of reactant is called ?
entropy
heat content
heat of fusion
activation energy
The difference between energy of product and energy of reactant is called 'heat content'.
What do you mean by energy?
Energy is the capacity to do work. In chemistry, energy is the capacity to perform chemical reactions or the capacity to cause changes in the physical or chemical properties of a substance. Energy can be stored in a number of different forms, including chemical, thermal, and electrical energy. The most common form of energy used in chemistry is chemical energy, which is stored in molecules. Chemical energy is released when bonds between atoms are broken and new bonds are formed.
Heat content (also known as enthalpy of reaction) is the difference between the energy of the products and the energy of the reactants in a chemical reaction. It is the amount of energy released or absorbed during the reaction. Heat content can be used to calculate the energy change of a reaction, which can be used to determine the feasibility of a reaction as well as the amount of energy that needs to be supplied to make the reaction occur.
Hence, option B is correct.
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A metal sphere of 0. 5 kg is heated to 300 oc, than dropped into a beaker holding 4. 08 kg mercury at 20 oc. The temperature of the mercury stabilizes at 99oc after a couple of minutes. What metal was the sphere made of?.
The metal sphere was made of a substance with a specific heat capacity of 4,512.48J/kg-K.
Calculate the total heat energy required to raise the temperature of the metal sphere:
Q = mc∆T
Where m is the mass of the metal sphere (0.5 kg), c is the specific heat capacity (unknown), and ∆T is the change in temperature (300 oC - 20 oC = 280 oC).
Q = (0.5 kg)(887 J/kg-K)(280 oC)
Q = 125,160 J
Calculate the total heat energy required to raise the temperature of the mercury:
Q = mc∆T
Where m is the mass of the mercury (4.08 kg), c is the specific heat capacity of mercury (0.14 J/g-K), and ∆T is the change in temperature (99 oC - 20 oC = 79 oC).
Q = (4.08 kg)(0.14 J/g-K)(79 oC)
Q = 4,512.48J/kg-K
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Oxidative phosphorylation is a process involving a flow of electrons through the electron transport chain, a series of proteins and electron carriers within the mitochondrial membrane. This flow of electrons allows the electron transport chain to pump protons to one side of the mitochondrial membrane. As the protons build up, they create a proton-motive force, a type of electrochemical pressure. This pressure is relived through specialized protein complexes, which capture the energy of the protons as they flow to the other side of the membrane. True Or False
The statement provided in the question regarding Oxidative phosphorylation is True.
Oxidative phosphorylation is a process that involves the flow of electrons through the electron transport chain, a series of proteins and electron carriers within the mitochondrial membrane. The flow of electrons allows the electron transport chain to pump protons to one side of the mitochondrial membrane, creating a proton-motive force, a type of electrochemical pressure. This pressure is then relieved through specialized protein complexes, which capture the energy of the protons as they flow back to the other side of the membrane. This energy is used to produce ATP, the primary energy currency of cells. The process of oxidative phosphorylation is an essential step in cellular respiration, and it occurs in the mitochondria of eukaryotic cells and the plasma membrane of prokaryotic cells.
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