Which molecule in each pair has the greater dipole moment? Give the reason for your choice.
(a) SO₂ or SO₃
Answers
S\(O_{2}\) has a larger dipole moment than S\(O_{3}\).
Both have δ+ S and δ- O atoms. S\(O_{2}\) is bent leading to the dipole shown.
S\(O_{3}\) is trigonal planar so that the individual dipoles on the S-O bonds cancel and the molecule has no dipole moment.
What is dipole moment in chemistry and its application?
If +q amount positive charge separated by −q amount of negative charge by the bond distance l, then dipole moment (μ) of polar molecule = q × l. Perfectly non-polar molecules like hydrogen, oxygen, and nitrogen have zero dipole moment. The polar molecules like water, ammonia, and methane have positive values.
Why is dipole moment important?
The significance/applications of dipole moment are as follows: Dipole moment is useful in finding the polar nature of the chemical bond: As the magnitude of dipole moment increases, the polar nature of the bond increases. Molecules with zero dipole moment are non-polar in nature.
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Related Questions
a chemical element that, at normal atmosphere temperatures and pressures, exsist as a colorless, odorless and tasteless gas and comprises about 21y volume of the earth’s atmosphere.
Answers
The chemical element that fits the given description is nitrogen (N). Nitrogen is a chemical element that exists as a colorless, odorless, and tasteless gas at normal atmospheric temperatures and pressures.
Nitrogen is a colorless, odorless, and tasteless gas that exists as diatomic molecules (N2) at normal atmospheric temperatures and pressures. It is the most abundant gas in Earth's atmosphere, comprising approximately 78% of the volume.
To determine the percentage of nitrogen in Earth's atmosphere, we divide the volume of nitrogen gas by the total volume of the atmosphere and multiply by 100.
Percentage of nitrogen = (Volume of nitrogen gas / Total volume of the atmosphere) x 100
Since nitrogen comprises about 78% of the volume of Earth's atmosphere, we can conclude that nitrogen gas makes up approximately 78% of the atmosphere.
In conclusion, nitrogen is a chemical element that exists as a colorless, odorless, and tasteless gas at normal atmospheric temperatures and pressures. It constitutes about 78% of the volume of Earth's atmosphere.
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What is the concentration of a 54.10 ml solution of HBr that is completely titrated by 35.00 ml of a 0.200 m NaOH solution?
Answers
The concentration of the HBr solution is 0.129 M.
To find the concentration of the HBr solution, you can use the concept of titration.
First, we need to determine the number of moles of NaOH used in the titration. The number of moles can be calculated using the formula: moles = concentration × volume.
moles of NaOH = 0.200 M × 35.00 mL
moles of NaOH = 0.007 moles
Since HBr and NaOH react in a 1:1 ratio, the number of moles of HBr is also 0.007 moles.
Next, we can calculate the concentration of HBr using the formula: concentration = moles / volume.
concentration of HBr = 0.007 moles / 54.10 mL
concentration of HBr = 0.129 M
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7. What measures are applicable in the context of Nepal to push energy crisis further. Describe any three points clearly.
Answers
Answer:
which energy?........
Explanation:
..........................
........
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6. Neon has 10 electrons - 2 in the inner shell and 8 in the outer shell. This arrangement of 8 electrons in the
outer shell is extremely stable and makes neon inert, with a valence of zero. Sodium has 11 electrons - 2
in the first shell, 8 in the next shell, and I in the outer shell. Fluorine has 9 electrons - 2 in the first shell
and 7 in the outer shell. How could sodium and fluorine from a compound in which both elements would
be like neon with 8 electrons in the outer shell?
Answers
Let look at EC of Sodium(Na)
\(\\ \sf\longmapsto 1s^22s^22p^63s^1\)
valency= +1Now look at EC of Fluorine
\(\\ \sf\longmapsto 1s^22s^22p^5\)
Valency=-1Now the Compound will be
\(\\ \sf\longmapsto NaF\)
on a relative basis, the weaker the intermolecular forces in a substance,
Answers
On a relative basis, the weaker the intermolecular forces in a substance, the lower its boiling point and the higher its vapor pressure. Here, option A is the correct answer.
Intermolecular forces are the forces of attraction between molecules. They play a significant role in determining the physical properties of substances, such as boiling point, melting point, and vapor pressure. Strong intermolecular forces, such as hydrogen bonding or ion-dipole interactions, require more energy to overcome. As a result, substances with strong intermolecular forces tend to have higher boiling points because it takes more heat energy to break those forces and convert the substance from a liquid to a gas.
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complete question is below
on a relative basis, the weaker the intermolecular forces in a substance,
A.the lower its boiling point and the higher its vapor pressure.
B.the higher its vapor pressure.
SEP Construct an Explanation What challenges do the three industries have in making better batteries? What solutions are being suggested?
Answers
The three industries commonly associated with battery technology are the automotive, electronics, and renewable energy sectors. Each of these industries faces specific challenges when it comes to developing better batteries.
Automotive Industry:
Energy Density: One of the primary challenges for electric vehicles (EVs) is improving battery energy density, which refers to the amount of energy that can be stored per unit of volume or weight. Higher energy density batteries would allow for longer driving ranges and reduced charging times.Cost: Batteries constitute a significant portion of an electric vehicle's cost. Therefore, reducing the cost of battery production is crucial for making EVs more affordable and competitive with traditional internal combustion engine vehicles.Charging Infrastructure: The limited availability of charging stations and relatively longer charging times compared to refueling a conventional vehicle remain challenges. The industry is focusing on expanding charging infrastructure and developing fast-charging technologies to address this issue.Electronics Industry:
Power Density: Electronic devices, such as smartphones and laptops, require batteries with high power density to support their energy-intensive operations. However, increasing power density while maintaining safety and minimizing size is a challenge.Battery Lifespan: Consumers expect electronic devices to have a longer battery life before needing a recharge. Enhancing battery lifespan through improved materials, design, and management systems is an ongoing pursuit.Environmental Impact: The electronics industry is increasingly concerned about the environmental impact of batteries, particularly regarding the disposal and recycling of lithium-ion batteries. Developing sustainable and eco-friendly battery technologies is a suggested solution.Renewable Energy Industry:
Energy Storage Capacity: Renewable energy sources like solar and wind are intermittent, meaning they are not continuously available. Efficient energy storage solutions are needed to store excess energy produced during peak times and supply it during periods of low or no generation. Integration with the Grid: Integrating renewable energy sources with the existing electrical grid is a challenge due to fluctuations in supply and demand. Advanced battery technologies can help stabilize the grid by providing rapid response and balancing services.Durability and Longevity: Renewable energy projects, such as utility-scale installations, require long-lasting and durable batteries that can withstand frequent charge-discharge cycles without significant degradation. Enhancing battery life and reliability is a focus for the industry.For such more questions on technology
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Is damp wood and ignition source?
Answers
Answer: An ignition source is a process or event which can cause a fire or explosion. Open flames, sparks, static electricity, and hot surfaces are all possible ignition sources. An explosion can occur when flammable gases or vapors in the air come in contact with an ignition source such as a spark.
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Calculate the mass percent and molality of a solution containing 25.0 g KNO3 dissolved in 250. g water
Answers
The mass percent of KNO3 in the given solution is 9.09% and its molality is 0.98 m.
Mass percent is the ratio of the mass of the solute to the mass of the solution multiplied by 100. Molality is the number of moles of solute in 1 kg of solvent. The formula for calculating mass percent is as follows;
Mass percent of solute = (mass of solute / mass of solution) x 100Given;Mass of KNO3 = 25.0 gMass of water = 250. gTotal mass of solution = mass of KNO3 + mass of water = 25.0 g + 250. g = 275.0 gNow, using the formula above;Mass percent of KNO3 = (25.0 g / 275.0 g) x 100 = 9.09 %Molality can be calculated using the formula below ;
Molality = number of moles of solute / mass of solvent in kgFirstly, calculate the number of moles of KNO3.Number of moles of KNO3 = mass of KNO3 / molar mass of KNO3Molar mass of KNO3 = 39.1 + 14.0 + (16.0 x 3) = 101.1 g/molNumber of moles of KNO3 = 25.0 g / 101.1 g/mol = 0.247 molMolality = number of moles of solute / mass of solvent in kgGiven; Mass of water = 250 g = 0.25 kgMolality = 0.247 mol / 0.25 kg = 0.98 m
In a given solution, the mass percent of a solute can be calculated. It is the ratio of the mass of the solute to the mass of the solution multiplied by 100. Molality is the number of moles of solute in 1 kg of solvent. The number of moles of the solute can be calculated first, then used to calculate molality. Given that 25.0 g of KNO3 is dissolved in 250 g of water, the total mass of the solution is 25.0 g + 250. g = 275.0 g. The mass percent of KNO3 is calculated by using the mass percent formula. Therefore, (25.0 g / 275.0 g) x 100 = 9.09%.To calculate molality, the number of moles of KNO3 is calculated. The number of moles of KNO3 can be found using its mass and molar mass.
The molar mass of KNO3 can be calculated by adding the atomic masses of the elements it contains. Thus, 39.1 + 14.0 + (16.0 x 3) = 101.1 g/mol. The number of moles of KNO3 is calculated by dividing the mass of KNO3 by its molar mass, thus 25.0 g / 101.1 g/mol = 0.247 mol. The molality of the solution is obtained by dividing the number of moles of KNO3 by the mass of the solvent in kg. The mass of the solvent is given as 250 g which is equivalent to 0.25 kg. Therefore, 0.247 mol / 0.25 kg = 0.98 m.
The mass percent of KNO3 in the given solution is 9.09% and its molality is 0.98 m.
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3. When two forces act in the SAME direction on an object, the net force is found by
the two forces.
Answers
Answer:
Combining
Explanation:
think that's the answer
7. To determine how many elements are in a covalent compound you look at the_______
in the name
To determine how many elements are in an ionic compound you must follow the rule of____________
Answers
Chemically speaking, covalent bonds are those between two or more atoms when the electrons are shared rather than transferred, as in the case of ionic bonds. Generally speaking, ionic bonding can be seen in compounds where a metal is bound to a semi or a semi-metal.
What five covalent compounds are examples?Hydrogen (H2), oxygen (O2), nitrogen (N2), water (H2O), and methane (CH4) are five instances of covalent bonding. A covalent bond is a type of chemical relationship where two atoms share electron pairs.
What substance is covalent?Covalent compounds are those whose atoms are joined together by covalent bonds. Sharing 1 or more pair of valance electrons results in the formation of a covalent bond.
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If Maria winks exactly 5 times every minute while she is awake and she sleeps exactly 8 hours a day, how many times does Maria wink in a day? winks/day.
Answers
Answer:4,800
Explanation:
5 winks a minute, 60 minutes in an hour.
300 winks an hour, 16 hours a day.
4,800.
Answer:
The answer is 4,800 winks per day.
Explanation: There are 24 hours in a day, 24 minus the 8 hours shes asleep is 16. There are 60 minutes in an hour. 5 x 60 is 300. 300 winks an hour multiplied by the 16 hours she's awake is 4,800.
) An element X has a relative atomic mass of 88. When a current of 0.5 A was passed through the fused chloride of X for 32 min. 10sec, 0.44g of X was produced at the cathode.
(a) Calculate the no. of Faradays required to liberate 1 mole of X.
(b) What is the charge on the X ion?
(c) Write the formula for the hydroxide of X.
Answers
1) 2F is required to liberate 1 mole of X.
2) The charge is + 2
3) The hydroxide of X is X(OH)2
What is the cathode?We can see from the question that we are dealing with the kind of reaction that would occur in the electrochemical cell and we are going to deal with the problem as seen.
We know that the element is strontium. Thus we have to know that the ionic charge that the element X would carry is + 2 and that we would need 2F to remove the electron that is there as we have from the statements that are above.
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The equilibrium concentration of sulfide ion in a saturated lead sulfide solution is M. (Assume that .)
Answers
How many grams of lead would be required to make 119 grams of water
Answers
Answer:
684
Explanation:
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 684 g of lead would be required to make 119 grams of water.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
The balanced equation for the given reaction can be written as below
Pb + PbO\(_2\) + 2H\(_2\)SO\(_4\) \(\rightarrow\)2PbSO\(_4\) + 2H\(_2\)O
Mathematically,
The mole ratio between lead and water is 1:2
(119 g H2O) / (18.01532 g H2O/mol) x (1 mol Pb / 2 mol H2O) x (207.21 g Pb/mol) = 684 g Pb
The mass of lead comes out to be 684 g.
Therefore, 684 g of lead would be required to make 119 grams of water.
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how can you test a sample of soil for acidity or alkalinity
Answers
Answer:
Scoop a soil sample into a fresh container, add 1/2 cup of water, and mix. Then, add 1/2 cup of baking soda. If the soil bubbles or fizzes, the soil is acidic. The reaction you're seeing is the result of acidic soil coming into contact with an alkaline substance (baking soda).
Explanation:
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a closed piston-cylinder device contains 5l of water vapor are initially at 300 kpa and 200 deg c. the water undergoes some process taking it to a final state of 175 kpa and a quality of 50%. determine the change of enthalpy between the initial and final state
Answers
The change in enthalpy (Δh) between the initial and final state is \(-48270 kJ\)
The change in enthalpy (Δh) between the initial and final state can be calculated using the following equation:
Δ\(h = m (h2 - h1)\)
where m is the mass of water vapor, h1 is the enthalpy of the initial state and h2 is the enthalpy of the final state.
Since the initial state is at 300 kPa and 200°C, the enthalpy of the initial state (h1) can be calculated using the steam tables. From the steam tables, the enthalpy of the initial state (h1) is 2760 kJ/kg.
The final state is at 175 kPa and a quality of 50%. The enthalpy of the final state (h2) can also be calculated using the steam tables. From the steam tables, the enthalpy of the final state (h2) is 1703 kJ/kg.
Now, the mass of water vapor (m) in the closed piston-cylinder device can be calculated using the ideal gas law equation.The following equation is the ideal gas law:
\(PV = mRT\)
where R is the gas constant, T is the temperature, V is the volume, m is the mass, and P is the pressure.
Since the volume of the closed piston-cylinder device is 5 liters and the temperature is 200°C, the mass of the water vapor (m) can be calculated as follows:
\(m =\frac{ (300 kPa * 5 liters)}{ (0.287 *323.15 K)}\)
Therefore, the mass of the water vapor (m) is 41.6 kg.
Finally, the change in enthalpy (Δh) between the initial and final state can be calculated using the equation given above. Thus,
Δ\(h = 41.6 (1703 - 2760) = -48270 kJ\)
Therefore, the change in enthalpy (Δh) between the initial and final state
is \(-48270 kJ\).
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Plz answer asap
The number of moles in 5.82 x 10^22 sulfate ions (SO4^2-)
Answers
Answer:
i don't know sorry
Explanation:
give two sources of energy that can cause ocean waves
Answers
Explanation:
Thermal energy from the sun's heat, and mechanical energy from previous tides and waves. Oceans are one of the largest solar collectors.
What is the wavelength of a photon containing 3.87x10-23) of energy? (answer in standard form)
Answers
Answer:
Refer to the attachment
the ionization energy of o2 is 1205 kj/mol. what is the maximum wavelength of light capale of causing the ionization of o2?
Answers
O2 can only be ionized by light with a maximum wavelength of 99.39 nm.
What is ionization energy?The ionization energy measures an element's ability to participate in chemical processes that call for the creation of ions or the donation of electrons.
ionization energy of O2 = 1205 kJ
energy = hv
= h × wavelength/speed of light
wavelength = 1205000× 3 ×10⁸ /6.626 ×10³⁴
wavelength = 99.39 nm.
He is symbolized by the highest ionization energy. The outermost shell has a high ionization energy, is stable, and does not frequently become unstable due to electron loss. Ionization can be induced by waves with energies greater than 134 nm. 225nm light lacks the energy to ionize gold because it is greater than 134nm.
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The molar mass of hydrogen (H) is 1 g/mol, the molar mass of chlorine (Cl) is 35 g/mol, and the molar mass of zinc (Zn) is 65 g/mol. When 130 grams of zinc react completely in hydrochloric acid (HCl), how much is the total mass of the products
Answers
The total mass of the product will be 137 grams.
Stoichiometric calculationsFrom the equation of the reaction:
\(Zn + 2HCl --- > ZnCl_2 + H_2\)
Mole of 130 grams of Zn = 130/65 = 2 moles
Equivalent mole of \(ZnCl_2\) = 1 mole = 1 x135 = 135 grams
Equivalent mole of \(H_2\) = 1 mole = 1 x 2 = 2 grams
Total mass of the products = 135 + 2 = 137 grams.
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based on the mohs hardness scale, which mineral could be scratched by a penny but not by a fingernail?
Answers
A penny, which is made of copper can scratch calcite, gypsum and talc.
Mohs scale is used to represent the degree of hardness. Common objects such as fingernail, copper penny and glass plate was used to perform the test. Using these testing tools, the hardness of an unknown mineral was determined by comparing with the nearest number on Mohs scale.
The scale consists of 10 different minerals. A material which has a hardness higher than the other can scratch anything with hardness of equal number or lower number.
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if 4.55 g of naoh is typically produced by a chemical reaction, what would be the percent yield if 5.00 g could theoretically be produced from the reaction?
Answers
91% would be the percent yield if 5.00 g could theoretically be produced from the reaction.
In chemistry, yield, also known as reaction yield, is a percentage measure of the number of moles of a product created in proportion to the reactant consumed in a chemical process. One of the most important elements that scientists must address in organic and inorganic chemical synthesis processes is yield.
The words "yield," "conversion," and "selectivity" are used in chemical reaction engineering to indicate ratios of how much of a reactant was consumed (conversion), how much desirable product was generated (yield), and how much unwanted product was formed (selectivity), denoted as X, Y, and S.
A chemical reaction equation can be used to calculate the ideal connection between products and reactants in a chemical process. Stoichiometry is used to calculate chemical processes, such as the stoichiometric mole ratio of reactants and products.
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Write a balanced formula equation, complete ionic equation and net ionic equation for each of the following reactions
Answers
Answer: a)Complete ionic equation:
2NH₄⁺ + S²⁻ + Fe²⁺ + SO₄²⁻ → 2NH₄⁺ + SO₄²⁻ + FeS
Net ionic equation:
Fe²⁺ + S²⁻ → FeS
b) Complete ionic equation:
2Na⁺ + SO₃²⁻ + Ca²⁺ + 2Cl⁻ → 2Na⁺ + 2Cl⁻ + CaSO₃
Net ionic equation:
SO₃²⁻ + Ca²⁺ → CaSO₃
c) Complete ionic equation:
Cu²⁺ + SO₄²⁻ + Ba²⁺ + 2Cl⁻ → Cu²⁺ + 2Cl⁻ + BaSO₄
Net ionic equation:
Ba²⁺ + SO₄²⁻ → BaSO₄
Explanation:
(a) Balanced formula equation:
(NH₄)₂S + FeSO₄ → (NH₄)₂SO₄ + FeS
Complete ionic equation:
2NH₄⁺ + S²⁻ + Fe²⁺ + SO₄²⁻ → 2NH₄⁺ + SO₄²⁻ + FeS
Net ionic equation:
Fe²⁺ + S²⁻ → FeS
(b) Balanced formula equation:
Na₂SO₃ + CaCl₂ → NaCl + CaSO₃
Complete ionic equation:
2Na⁺ + SO₃²⁻ + Ca²⁺ + 2Cl⁻ → 2Na⁺ + 2Cl⁻ + CaSO₃
Net ionic equation:
SO₃²⁻ + Ca²⁺ → CaSO₃
(c) Balanced formula equation:
CuSO₄ + BaCl₂ → CuCl₂ + BaSO₄
Complete ionic equation:
Cu²⁺ + SO₄²⁻ + Ba²⁺ + 2Cl⁻ → Cu²⁺ + 2Cl⁻ + BaSO₄
Net ionic equation:
Ba²⁺ + SO₄²⁻ → BaSO₄
The balanced equation for the acid disassociation of acetic acid.
Answers
Answer:
Refer to the picture.
A heat sensing resistor that changes its value as its temperature changes is known as a:_____.
Answers
A heat sensing resistor that changes its value as its temperature changes is known as a Thermistor.
The Thermistor is a special type of variable resistive detail that adjustments its physical resistance while uncovered to modifications in temperature. The Thermistor is a solid kingdom temperature sensing device which acts a chunk like an electrical resistor however is temperature touchy. A thermistor is a temperature sensitive resistor. they may be regularly used as a temperature sensor.
Thermocouples are the maximum generally used form of temperature sensor. they are used in business, automotive, and purchaser programs. Thermocouples are self-powered, require no excitation, can function over a extensive temperature variety, and feature brief response times.
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which of these atoms has the most stable nuclei? Ra
Po
Rn
Au
Answers
Answer:
Rn has the most stable nucleus
Rn (Radon) has the most stable nuclei due to its closer proximity to the magic number 126.
Option (3) is correct.
The stability of a nucleus depends on the arrangement of protons and neutrons within it. Certain numbers of protons and neutrons result in more stable nuclei. These numbers are known as magic numbers, and they correspond to complete nuclear shells.
Among the given atoms:
Ra (Radium) has 88 protons and a varying number of neutrons.
Po (Polonium) has 84 protons and a varying number of neutrons.
Rn (Radon) has 86 protons and a varying number of neutrons.
Au (Gold) has 79 protons and a varying number of neutrons.
Radon (Rn) has the most stable nuclei because it is closer to the magic number 126 for neutrons. Elements with magic numbers of protons or neutrons tend to have more stable configurations, making Rn the most stable among the options provided.
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The unit for molar mass is
Answers
Which of the following is a physical
change?
A iron rusting under water
B copper turning green in the air
C solid iodine subliming into a gas
D hydrogen and oxygen producing water
Answers
Answer:
C. solid iodine subliming into a gas
Explanation:
A physical change is a change that is reversible and can be reversed back into the original product. The atoms and molecules undergoes some rearrangement in the physical change. The process of change in the state of matters are placed under physical change. Solid iodine sublimes into purple gas on heating. The gas is then changed back to iodine crystals after being cooled. Hence, this is an example of a physical change.
when the numerical value of q is less than k, in which direction does the reaction proceed to reach equilibrium? remains the same backward forward
Answers
When the numerical value of q is less than k, the reaction proceeds in the forward direction to reach equilibrium. The reaction will proceed in the forward direction to increase .
The reaction quotient, which is calculated using the concentrations of reactants and products at any given time during a reaction. K is the equilibrium constant, which represents the ratio of the concentrations of products to reactants at equilibrium.
When q (the reaction quotient) is less than k (the equilibrium constant), it means that there are more reactants than expected at equilibrium. In order to reach equilibrium, the reaction needs to proceed forward, converting reactants into products until q becomes equal to k, and the system reaches equilibrium.
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