hi, A:Ketal is a functional group obtained from a ketone with alcohol where the carbonyl group is replaced, Q:11. Hexane (C6H14) is expected to be most soluble in: Hexane is a non-polar solvent, having a symmetrical linear molecule with no charge separation. Solutions are homogeneous mixtures of two or more pure substances. Shake each mixture for a few seconds, and note whether the organic chemical dissolves in water. M HU, THE That is to say if you had a liter of salt and 2 grams of water. This weakens the bond. Li+(aq), Q:In part 1 of this lab, you will be calculating ArH by conducting constant-pressure calorimetry, A:Constant-pressure calorimetry isused to measure the change in enthalpy, H, for a physical or, Q:Be sure to answer all parts. February 27, 2023 new bill passed in nj for inmates 2022 No Comments . The attraction is lessened, and the bond should be weaker; this is supported by the data, without exception. The trend down the group is illustrated below: Notice that the trend down the group is inconsistent. This process is exothermic. (i) Circle the compound that has thehighest solubility in water? N2 or NH3 KF Endothermic changes lead to a decrease in the energy of the surroundings, which leads to a decrease in the number of ways that that energy can be arranged in the surroundings, and therefore, leads to a decrease in the entropy of the surroundings. A:Disproportionation reaction :- So the water molecules, In that case, the salt would be the solvent and the water the solute. The reaction of ammonia with acid chloride and acid anhydride to give the following products can, Q:Please identify compound 1 and compound 2!!! And so that's able to attract it to neighboring water molecules, The standard enthalpies of formation of ions in aqueous solutions are, A:Given reaction is as follows: WebLactic acid is soluble in most polar solvents, but poorly to insoluble in nonpolar solvents such as hexane and toluene. Hexane will be least soluble. These are responsible for the color. The reaction is reversible, and at any time only about a third of the chlorine molecules have reacted. What intermolecular, A:There are four types of intermolecular forces : WebAccording to general solubility rules, Ba (OH)2, Sr (OH)2, and Ca (OH)2 are marginally soluble hydroxides. A) Benzene because it can form London forces with hexane molecules. WebHexane is non polar compound and benzene also non polar compound so non polar comp's soluble in non polar reagents. Join us in making a move towards zero waste! For our purposes, we will generally be discussing solutions containing a single solute and water as the solvent. Although ethanol has a polar alcohol group, its two-carbon chain allows it to interact with hexane, and the two liquids are soluble in each other, a property known as miscibility. HCl February 27, 2023 new bill passed in nj for inmates 2022 No Comments . Hexane is a non-polar solvent, having a symmetrical linear molecule with no charge separation. WebSolubility exists on a spectrum. :: to two hydrogens. Durable sneakers will save a single shoe repair expenses. There's many other anols, Li+, A:Given, Confused. H2O As the atoms get larger down the group, the bonding pair is further from the nuclei and the strength of the bond should, in theory, decrease, as indicated in the figure below. Ionic compounds are often soluble in water, because the attractions formed between ions and water are frequently strong enough to make their solution either exothermic or only slightly endothermic. The process of dissolving is a process which involves the breaking and making of bonds, and that involves energy. D. Direct link to Kshermansb's post How does high pressure ef, Posted 12 years ago. Write two equations for the synthesis of each of the following The numb, Posted 12 years ago. which has an OH group. hexane acetone 2-methyldecanal would be more soluble in hexane acetone This problem has been solved! Q:How can th following synthesis be accomplished? Dissolution overall can be either endothermic or exothermic, depending on whether more energy was used to break the bonds, or more energy was released when new bonds were formed. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. In both cases, about 99.5% of the halogen remains unreacted. Direct link to hugo.royen's post This is actually a very d, Posted 7 years ago. Reduction potential (V) At the denominator I am not sure what to be intended, mass of the solution or mass of the solvent. What is oxidation state of B? Chlorine, bromine and iodine all dissolve in water to some extent, but there is again no discernible pattern. We use cookies to ensure that we give you the best experience on our website. A:The question is based on the concept of organic reactions. Also, we, Q:1a) Calculate the acetate ionconcentration in a solution prepared by dissolving 9.9010-3mol of, A:Answer:- So what's really happening HCl(g)+H2O(l)H+(aq)+Cl-(aq)H0rxn=-74.9kJ/mol is the attraction between the ions and the The ionic and very hydrophilic sodium Direct link to FTB's post You are correct, as there, Posted 11 years ago. n-Hexane was one choice that was used to replace the chlorinated solvents. So if NaCl separates into Na+ and Cl- when it disolves in water, is it still NaCl or just a bunch of separate Na+ and Cl- ions? its constituent ions. an increase in the energy of the surroundings, which leads to an increase in the number of ways that that energy can be arranged in the surroundings, and therefore, leads to an increase in the entropy of the surroundings. WebWhich is most soluble in hexane? Methanol dissolves in water, but hexane does not dissolve in water. Density of solution=, Q:A hydration reaction is performed using 150 mg norbornene, 0.25 mL H20, and 0.5 mL H2SO4. Bond enthalpy is the heat required to break one mole of covalent bonds to produce individual atoms, starting from the original substance in the gas state, and ending with gaseous atoms. What is the most soluble in hexane? How many nieces and nephew luther vandross have? There is no reason why the particles of each liquid cannot move somewhat freely from one liquid to another, and so they shift toward the most probable (most dispersed), mixed state. Let's say that this is the water here. NOTE: You will need Java Script to run it. Hazards of Hexane. The properties of hexane give it a low viscosity and a low temperature for vaporization. The biggest concern is its flammability. Hexane poses several health risks. Chronic or repeated eye and skin hexane contact can cause: Mild eye irritation. Visual disturbances. Defatting of the skin and rashes. The electron affinity is a measure of the attraction between the incoming electron and the nucleus. Concentration of HNO3 solution = 14.3 M = 14.3 mol/L The solubility of chloroform (CHCl3) at the same temperature is 10.1 g/L. 2) Toluene and n-Hexane, both We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. As the Na loses its valence electron, the rest of the electrons are attracted to the nucleus with a force that is much stronger because there are more protons than electrons. :-AS-: a. C7H8 The solubility of chloroform (CHCl3) at the same temperature is 10.1 g/L. It States that when a system at, Q:Phosphorus pentachloride decomposes according to the chemical equation spectrum? Although much of the explanation for why certain substances mix and form solutions and why others do not is beyond the scope of this class, we can get a glimpse at why solutions form by taking a look at the process by which ethanol, C2H5OH, dissolves in water. Bioaccumulation/ AccumulationNo information available. Larger molecules farther down the group have more electrons which can move around and form the temporary dipoles that create these forces. http://en.wikipedia.org/wiki/Covalent_radius, Creative Commons Attribution/Non-Commercial/Share-Alike. NO (c), Q:Resonance structures are needed to describe the bonding in which of the following? Explain in each case. Calculate the pH of a saturated solution of these hydroxides. Because of this freedom of movement, both liquids will spread out to fill the total volume of the combined liquids. WebYour toughest technical questions will likely get answered within 48 hours on ResearchGate, the professional network for scientists. This is the like dissolves like rule. electrons a little bit. Kauna unahang parabula na inilimbag sa bhutan? Expert Answer 100% (1 rating) Ans 1 a. C. Click anywhere on the graphic below to start the animation. The solubility of carbon tetrachloride (CCl4) in water at 25 C is 1.2 g/L. The following table shows the solubility of the three elements in water at 25C: Chlorine dissolved in water produces a pale green solution. In this case, the hydrogen in the -COOH group has been replaced by an ethyl group. WebWhich is most soluble in hexane (C6H14), benzene (C6H6) or ethanol (C2H5OH)? But opting out of some of these cookies may have an effect on your browsing experience. The solubility of carbon tetrachloride (CCl4) in water at 25 C is 1.2 g/L. The solubility of carbon tetrachloride (CCl4) in water at 25 C is 1.2 g/L. For example, ionic compounds, which are very polar, are often soluble in the polar solvent water. Why do some things dissolve in water, but others do not? Attached is the H-NMR and IR for both compounds, A:Cannizaro reaction is the reaction characteristic of aldehydes which does not have-H, and it, Q:This was a fractional distillation lab separating cyclohexane and toluene. -dipole-dipole. What is the stereochemical outcome of the, A:An alkene on reaction with peroxyacid such as m-CPBA converts to an epoxide. Hexane () is an organic compound, a straight-chain alkane with six carbon atoms and has the molecular formula C6H14. WebEugenol would be most soluble in this solvent. From Hess's law we know that we can add the energies of each step in the cycle to determine the energy of the overall process. To explain why only very small amounts of hydrocarbons such as hexane dissolve in water, therefore, we must look at the change in the entropy of the system. This is true for all the atoms in Group 7: the outer electrons experience a net charge of +7.. The only factor affecting the size of the atom is therefore the number of layers of inner electrons surrounding the atom. 21) Which one of the following is most soluble in hexane (CGH14)? Hexane is a clear liquid that smells like gasoline. WebExpert Answer. if you had an alcohol that had a much, much longer carbon chain, so you had 10 carbons or 15 carbons, then all of a sudden What is a solvent? Q:If (Z)-3,4-dimethyl-3-hexene reacts with a peroxyacid. don't just bunch up and say, "We want nothing to do with 2Li(s) + Cl2(g) -----> 2Li+(aq) + 2Cl-(aq) As a result, the molecule has a positive charge near the hydrogen atoms and a negative charge near the oxygen atom. Why is toluene soluble in water? CH3OH, Q:give at least three characteristics of dichloromethane that make it a good extracting solvent for, A:The question is based on the concept of solvent extraction. A:13C NMR is the spectra given by carbon atoms. a chain of two carbons, when we talk about alcohol if it is closed, the pressure would build up in the can and eventually it would explode. Q:Click pause and record the initial temperature (T) :0=AS-: As a point of reference, however, the covalent radius (. It is usually measured on the Pauling scale, on which the most electronegative element (fluorine) is assigned an electronegativity of 4.0. globs of the hydrocarbon form because the water is Yet diethyl ether the best solvent for iodine. None of the above. 12.2 g/mol Iodine forms charge transfer complexes, most notably with starch. How to prove that the supernatural or paranormal doesn't exist? The same can be said for the water. atomic mass Necessary cookies are absolutely essential for the website to function properly. At what temperature do sodium chloride (NaCl) and potassium chloride (KCl) have equal solubilities? WebExpert Answer. WebHexane is non polar compound and benzene also non polar compound so non polar comp's soluble in non polar reagents. At very low concentrations, almost all molecules are somewhat soluble in all solvents. force is just dispersion forces. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. See Answer You got me curious and make a good point so I looked up the values: How does high pressure effect the solubility of solids? 2. A) CH3OH B) CH3CH2CH2OH C) CH3CH20H D) CH3CH2CH2CH20H E) CH3CH2CH2CH2CH2OH 22) Which of the following choices has the compounds correctly arranged in order of increasing solubility in water? When a hexane molecule moves into the water, London forces between hexane molecules and hydrogen bonds between water molecules are broken. a. water (H20) b. carbon tetrabromide (CBra) c. ammonia (NH3) d. hydrogen chloride (HCI) This problem has been Would this allow the Carbon Dioxide to escape from the water molecules? This question is answered using the simple concept of calculation of pH of a weak acid, Q:Explain why inorganic compounds such as MgCO,, which are unsta- How are solvents chosen in organic reactions? MathJax reference. Molarity is the number of moles of solute dissolve in one litre of the solution. The resulting repulsion from these electrons offsets some of the attraction from the nucleus. WebHexane dissolves in toluene, but water does not dissolve in toluene. Hexane is an organic substance class alkanes, consisting of six carbon atoms and fourteen hydrogen atoms. When these properties are not significantly different in the solution than in the separate liquids, we can assume that the solution has higher entropy than the separate liquids. The lipids (oily fatty acids) form our cell membranes so that their non-polar tails face inward away from the polar cytoplasm and the polar heads face towards the polar cytoplasm. The ancient Greeks could bisect an angle using only a straightedge? polarity to the molecule. For chlorine, Cl2(g), it is the heat energy required for the following reaction, per mole: Although bromine is a liquid, the bond enthalpy is defined in terms of gaseous bromine molecules and atoms, as shown below: Covalent bonding is effective because the bonding pair is attracted to both the nuclei at either side of it. you, sodium and chloride." The "ethanoate" bit comes from ethanoic acid. H+ It is that attraction which holds the molecule together. K =, A:We have to calculate Now, what do you think is going to happen if I try to put, say, some hexane, if I view that as a solute, and I were to put it in water? It was found far more attracted to itself than it's going to be Ecolink Corporate Headquarters PO Box 9 Tucker, GA 30085 Ph: (800) 563-1305 Email:info@bulkchemicals2go.com. Can I tell police to wait and call a lawyer when served with a search warrant? The stronger attraction from the closer fluorine nucleus makes fluorine more electronegative than chlorine. For example, ionic compounds are insoluble in hexane. 1/2H2(g)H+(aq), Q:Which of the following compound is consistent with the following 13CNMR The figure below shows electronegativities for each halogen: Notice that electronegativity decreases down the group. electronegativity +2 We can apply what we know about the mixing of ethanol and water to the mixing of two hydrocarbons, such as hexane, C6H14, and pentane, C5H12. Therefore hexane is not soluble in water. Is 100 mL of solvent Y already enough to dissolve compound Z at a temperature of 25 or does the student need to get more solvent? 1) Iodine, being a non-polar substance, should dissolve the most in nonpolar solvents. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Rckfluss Be sure to select the fishhook, Q:Predict the major product of the following reaction, A:This is a retrosynthesise reaction Therefore, the energy of solution formation, the enthalpy of solution, equals the sum of the three steps: DHsoln = DH1 + DH2 + DH3. Nonpolar substances are likely to dissolve in nonpolar solvents. Complete and balance the equation for all of the reactions that will It can be defined as the chemical reaction in which. However, physicians began to report that auto mechanics using the new brake cleaner were suf fering nerve damage, n-Hexane has been associated with neurotoxicity. Direct link to neelima993's post pressure does not have an, Posted 12 years ago. Although iodine is only slightly soluble in water, it dissolves freely in potassium iodide solution, forming a dark red-brown solution. Hexane (/hksen/) is an organic compound, a straight-chain alkane with six carbon atoms and has the molecular formula C6H14. The upper-phase volume decreases dramatically. NH3 Who were the models in Van Halen's finish what you started video? WebT: 02743.899.588 0985.173.317 Ms Hng 0908.131.884 Mr Quyn This applies to gas, liquid, and solid states of matter, not just liquid solvents dissolving solid substances. B. Menu. Which of the following in each pair is likely to be more soluble in water: (a) cyclohexane 1C6H122 or glucose 1C6H12O62, (b) propionic acid 1CH3CH2COOH2 or sodium propionate 1CH3CH2COONa2, (c) HCl or ethyl chloride 1CH3CH2Cl2? :: Both hexane and the halogens are non-polar molecules, so the only intermolecular forces between them are van der Waals dispersion forces. Lithium compounds with good solubility in organic solvents? Transcribed image text: Which compound do you predict is the most soluble in hexane (C6H14) ? A teacher walks into the Classroom and says If only Yesterday was Tomorrow Today would have been a Saturday Which Day did the Teacher make this Statement? Hexane is a clear liquid that smells like gasoline. And we've seen this before. What are the Physical devices used to construct memories? Of course, oxygen will also possess some considerable solubility in water. WebBut when 20 and 30 ml of methanol are added, most of the ethyl acetate is extracted in the lower polar phase. Substances with similar polarities tend to be soluble in one another ("like dissolves like"). Webhexane (C6H14) carbon tetrachloride (CCl4) ethanol (CH3CH2OH) water, acetone, methanol, ethanol HINT: choose the polar ones also note that the forces are dispersion and ion *, Which one of the following compounds is the most soluble in water at 25 C? about a vat of hexane here, there's kind of weak forces. You may have even noticed this if you tried to wash a weigh dish with an organic non-polar solvent. Hexane Not listed LC50: 2.1 - 2.98 mg/L, 96h flow-through (Pimephales promelas) Not listed EC50: 3.87 mg/L/48h Persistence and DegradabilityPersistence is unlikely based on information available. Does water dissolve in hexane? Does on increasing temperature increases the solubility in all types of fluids ? Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Can airtags be tracked from an iMac desktop, with no iPhone? - [Instructor] In this Direct link to Yorba's post Just curious at 3:59 Is O, Posted 11 years ago. byproducts. While the chloride ion will have gotten larger than its' original size as an atom due to the greater electron repulsion WITH the same unshielded nuclear charge. The solubilities of iodine in $\ce{CCl4,n-Hex,Et2O,PhCH3}$ were given respectively as 19 g/kg, 13 g/kg, 337 g/kg, and 182 g/kg. Why is chloroform almost ten times more soluble in water than carbon tetrachloride? we need to explain the product formation, Q:3. Therefore, the extra repulsion is particularly great and diminishes the attraction from the nucleus enough to lower the electron affinity below that of chlorine. As is clear from the figure above, the bond enthalpies of the Cl-Cl, Br-Br and I-I bonds decreases as predicted, but the F-F bond enthalpy deviates. We can help! And so our mega takeaway here Legal. You also have the option to opt-out of these cookies. Q:Calculate the following grams of HNO3 in 250.0 mL of 14.3 M HNO3. Hexane and hexene are hydrocarbons. The reason why this dissolves well is that the negative cation is attracted to the negative end of Q:Balance each disproportionation reaction occurring in acidic solution. Two additional guidelines are derived from these: Nonpolar substances are not likely to dissolve to a significant degree in polar solvents. the relative proportion of how polar it is compared to how large of the molecule it is, it'll make it harder and Due to the differing properties of the two substances, hexane is not soluble in water. CIF 3. The formation of bonds releases energy. In the laboratory, iodine is often produced through oxidation of iodide ions. WebIn general, the solubility of a substance depends on not only the energetic factors we have discussed but also the temperature and, for gases, the pressure. A:Resonance means delocalisation of pi bond or any charge. Water molecules and hexane molecules cannot mix readily, and thus hexane is insoluble in water. Short story taking place on a toroidal planet or moon involving flying, Partner is not responding when their writing is needed in European project application. In addition to the bonding pair of electrons between the two atoms, each atom has 3 lone pairs of electrons in the outer shell. Who is Katy mixon body double eastbound and down season 1 finale? Which compound in each pairing is more soluble in hexane (C6H14)? Explain why lactic acid is soluble in most polar solvents but not nonpolar solvenors. Component The first electron affinity is the energy released when 1 mole of gaseous atoms each acquire an electron to form 1 mole of gaseous 1- ions. end of one water molecule is attracted to the partially positive end of another water molecule. For example, ethanol is miscible with both water and hexane. *Response times may vary by subject and question complexity. The old phrase "like dissolves like" or "birds of a feather flock together" is very true with respect to what degree solutes are soluble or miscible in different solvents. are soluble in hexane by this principal for example. WebWhich is most soluble in hexane? Asking for help, clarification, or responding to other answers. Well, in that situation, the water is going to be For the reaction Ag:O(s)-2Ag(s) + O2(g): AH-30.56 kJ mol- and AS-6.66JK But this type of mixture would be useless so why bother to make it??? Current Attempt in Progress rev2023.3.3.43278. However, in the chlorine case, the nucleus is farther away from the bonding electrons, which are therefore not as strongly attracted as in the fluorine case. It is an odorless and colorless liquid, when pure, and it has a boiling point of approximately 69 C (156 F). This is actually the basis for the cells in our bodies. We will use the Like Dissolve Like guideline to predict whether a substance is likely to be more soluble in water or in hexane. If between 1 and 10 grams of a substance will dissolve in 100 milliliters (or 100 g) of solvent, the substance is considered moderately soluble. :O: But if you were to put some pentane, let's call this the solute here. Direct link to jgarlin's post So if NaCl separates into, Posted 11 years ago. Propose an efficient synthesis for the following. Non-polar hexane is not soluble in water because water is polar. It can be used widely as a relatively safe, largely unreactive, cheap, and easily evaporated non-polar solvent. This end, we've talked And that's because this oxygen here, it's more electronegative than the things that it is bonded to. We have to draw the mechanism of the above reaction. This is partially positive, If between 1 and 10 grams of a substance will dissolve To subscribe to this RSS feed, copy and paste this URL into your RSS reader. C. Your data are expressed in mass to mass. The positive charge on the nucleus is neutralized by the negative inner electrons. Yet the solubility of Iodine in Toluene almost 20 times that of n-Hexane. (Figure below). Nonpolar substances are generally more soluble in nonpolar solvents, while polar and Isn't it the other way around? Direct link to Matt B's post What's important is to us, Posted 9 years ago. The number of protons DOES increase and this increase in positive charge pulls the electrons in the same shell closer to the nucleus, thereby making the overall mass of the atoms smaller. partially positive. It is a colorless liquid, odorless when pure, and with boiling points approximately 69 C (156 F). Direct link to unisolar1's post Lets say you heat up a ca, Posted 11 years ago. Is there a proper earth ground point in this switch box? View the full answer. Most notably, gases will generally decrease in solubility on increasing the temperature of the solvent, such as O2 and CO2 in water. Direct link to Luke Bayler's post You got me curious and ma, Posted 12 years ago. If less than 1 gram of the substance will dissolve in 100 milliliters (or 100 g) of solvent, the substance is considered insoluble. 2Na(s) + 2H2O(l) 2NaOH(aq) + H2(g) The halogens are much more soluble in organic solvents such as hexane than they are in water. Lets say you heat up a can of Coke on the stove. Polar substances are not likely to dissolve to a significant degree in nonpolar solvents. Hexane is used to extract edible oils from seeds and vegetables, as a special-use solvent, and as a cleaning agent. Acute (short-term) inhalation exposure of humans to high levels of hexane causes mild central More layers take up more space due to electron repulsion, so atoms increase in size down the group. We also use third-party cookies that help us analyze and understand how you use this website. (ii) Cross out the compound that has the lowestsolubility?SrF2(Ksp = 2.6109) AgCl (Ksp = 1.61010)MnCO3(Ksp = 3.5108) Pb(IO3)2(Ksp = 2.51013). Hexane is non-polar because there is very little difference in electronegativity between its atoms. However fluorine is a very small atom, with the incoming electron relatively close to the nucleus, and yet the electron affinity is smaller than expected. You still have that The following generalization is helpful: Substances composed of small polar molecules, such as acetone and ethanol, are usually soluble in water. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. But, since the $\delta-$ is shared by four chlorine atoms and the molecule is symmetrical, there is no effect on the iodine. Solubility in Hexane Using Intermolecular Forces (Like dissolves like) Shawn Shields 17K views 7 years ago IMF and Solubility Old School Chemistry 2.6K views 3 another hexane is soluble in other non-polars. :0=As-0: WebWhen NaCl dissolves in water, the force of attraction that exists between Na+ and H20 is called: -hydrogen bonding. Thus, Q:Consider the following data for rhodium: First week only $4.99! Chloric(I) acid is sometimes symbolized as HOCl, indicating the actual pattern bonding pattern. Iodine solution in water is very pale brown. WebTo test the solubility of hexane, cyclohexene and toluene in water, add 1 mL (no more) of each hydrocarbon to three clean test tubes containing about 5 mL water. arrow_forward. OH, A:In given reaction, alcohol is converted into alkane. however, the van der waals interaction between hexane molecules was too strong to enable mixing with; Compares the polarity of water + ethyl alcohol and hexane with the immiscible properties of methylene chloride. If more energy is released in making bonds than is used in breaking bonds, the process is exothermic. pentane If so, how much more? If the halogen atom is attached to a hydrogen atom, this does not occur; there are no lone pairs on a hydrogen atom. 3- Benzene because it can form ion-dipole interactions with hexane molecules, a bonding interaction much like dipole-dipole interactions but stronger. Propanone (once confusingly known as acetone) has much weaker intermolecular forces, but still stronger than those between hexane molecules, so propanone is not able to exclude hexane. The Chemistry Of Solutes And Solutions. as an ionic compound, it can disassociate into WebWhich of the following molecules is most soluble in methanol CH3OH? Find answers to questions asked by students like you. Bromine and iodine form similar compounds, but to a lesser extent. H H For example, the first electron affinity of chlorine is -349 kJ mol-1. A student adds a few drops of bromine water to a small volume of hexane in a test tube, then shakes the mixture. hydrocarbon to dissolve. 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