Ch3ch2ch2ch2oh Boiling Point

5ºC, whereas propane, with about the same molecular weight, boils at -42. Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. The greater the forces of attraction the higher the boiling point or the greater the polarity the higher the boiling point. ? The boiling point depends on what the atmospheric pressure is. The boiling points of ethanol, ethanal and ethanoic acid are given in the table below. EC Number 203-686-1. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. (c)Butanol molecules can form hydrogen bond amongst themselves. Sample/practice questions 2015, questions and answers - Chapters 4, 6, 9-15, 21 Lecture notes, lecture all - Chapter 15-20 Summary Organic Chemistry - Benzene and aromaticity Nutmeg Extraction Lab Key Reactivity of Alkyl Halides - Key Solubility of Org Compounds Key. Molecules Butan-1-ol Butan-2-ol 2-methylpropan-2-ol Boiling point (0C) 117 99 82 larger smaller weaker lower 7. 7)The alcohol which contains only one carbon atom and has the common name of wood alcohol is A)methanol. The boiling points of alcohols are much higher than those of alkanes with similar molecular weights. It will have the next highest boiling point. Ethanol (CH 3CH 2OH) c. 23) Which of the following liquids will have the lowest freezing point? A)pure H2O B)aqueous sucrose (0. osmotic pressure. 1-pentene is a colorless liquid with an odor of gasoline. c) ch3och(ch3)2. The higher weight makes it have a lower boiling point, and the hydroxyl group lets it form hydrogen bonds, which although weak, decrease boiling points. During the refining process, the long alkane chains of crude oil are broken into shorter chains using heat and catalysts, then purified by distillation at refineries on the basis of boiling point into fractions such as gasoline (boiling point fraction between 100°C and 400°C) or diesel fuel (boiling point fraction between 180°C and 360°C). Which one of the following compounds will have the highest boiling point? A) CH3CH2CH2CH2CH3 B) CH3CH2CH2CH2OH C) CH3CH2CH2OCH3 D) CH3CH2CH2Cl E) CH3CH2OCH2CH3 Ans: B Topic: Physical Properties. F322 module 1 Practice 1: 1. 6 ""^@Cthe major intermolecular interaction is dispersion force between the ether molecules. 69) Explain why the molecule shown below has a lower boiling point than CH3CH2CH2CH3. Step 1: Find your local pressure and elevation. Reset Help CH3CH2CH2CH3 CH3CH2CH2CH2OH CH3CH2OCH,CH; highest boiling point lowest boiling point The correct ranking cannot be determined. You need to establish two points on the thermometer with known (defined) temperatures— for example, the freezing point (0°C) and boiling point (100°C) of water. Molecular Weight 36. The boiling points of ethanol, ethanal and ethanoic acid are given in the table below. 0×10−3 mol of quinine. Which of the following undergo SN2 faster? (i) Cl CH2Cl. Use the following gas chromatogram of a mixture of dioxane and cyclohexane eluted on a non-polar column to answer. Why is the boiling point of propane-1,3-diol (HOCH2CH2CH2OH) higher than the boiling point of propane-1,2-diol [HOCH2CH(OH)CH3] (215 °C vs. (a) (CH3)3CC(CH3)3 or (CH3)2CHCH2CH2CH(CH3)2 (b) CH3(CH2)6CH3 or CH3(CH2)5CH2OH (c) CH3CH2OCH2CH3 or CH3CH2CH2CH2OH (d) HOCH2(CH2)4CH2OH or (CH3)3CCH(OH)CH3 (e) (CH3CH2CH2)2NH or (CH3CH2)3N (f) NH or NH2. The measured value of the boiling point was slightly less than the calculated value. Boiling Point ¾Why does water have a high boiling point? ¾A nice sounding but technically WRONG answer: “Water has high boiling point because the bonds in water Chapter 12 require a lot of energy to break. Physical properties: It is a bright red-orange crystalline solid with a density of 2. It should also have (pick all that apply): the lowest boiling point the. then find out. CH3CH2OH c. 4 *C by putting it in a beaker of boiling water. What is the boiling point for ch3ch2ch2ch2oh? Whether or not the boiling point of neon is negative depends on the temperature scale used to describe the boiling point. 81 Chemical Formula: CH3CH2CH2CH2OH Molecular Weight: 74. Ethanol, C2H5OH, and propane, C3H8, have approximately the same molar mass, yet, ethanol has a much higher boiling point. CH3CH2OH c. (b) Anthracene, C14H10, is a colourless solid with melting and boiling points of 218°C and 354°C. Kb for CCl4 = 5. Propyl acetate 99% CAS Number 109-60-4. Viscosity, Surface Tension, Boiling Point…. Expanded coverage has been given to important topics, including natural and synthetic polymers, organosulphur chemistry, pericyclic reactions, and heterocyclic compounds. 1) The product of dehydration of an alcohol is an. 1 is used,. Iodoethane is an iodoalkane that is ethane substituted by an iodo group. Identify the linear molecule with lone pairs of electrons. Show transcribed image text. So order of boiling point is butanoic acid > butanol > butanal. Many molecules are polar and can form bipole-bipole bonds without forming hydrogen bonds or even having hydrogen in their molecule. Hydrazine, N2H4, is a colourless liquid at room temperature with some similarity to water. 25 cm3 of 0. Predict which of these organic compounds has the highest boiling point. The molal boiling point constant for ethyl alcohol is 1. c) ch3och(ch3)2. GRE化学词汇表_英语学习_外语学习_教育专区。化学词汇表 Part 1 foundation chemistry 基础化学 Chapter 1 acid 酸 apparatus 仪器,装置 aqueous solution 水溶液 arrange. Rotary Evaporator A rotary evaporator rotovap is useful for solvent removal. It should be, I think, CH3CH2OH, ethanol. When 2-pentanol, CH3CH2CH2CH(OH)CH3, is dehydrated to an alkene, the major product is: CH3CH2CH = CHCH3. Composition: 1 Butanol 100% Grade: Purified Boiling Point: 118°C CAS Number: 71-36-3 Density: 0. From the phase diagram above, sketch the heating curve expected for this material starting at point A and moving directly ( in a straight line) to point E. Which molecule is non-polar? A. Circle and label all the functional groups in heroin. The Cu is added to the calorimeter, and after a time the contents of the cup reach a constant temperature of 30. Why is the boiling point of PH3 lower than that of NH3? A. Which of the compounds listed below would you expect to have the highest boiling point? CH3CH2CH2CH2OH. Solubility: Water is miscible with other polar liquids; alcohols and ethers of low molar mass are miscible with water and with each other because of their polarity. 4 Factors Affecting the Physical Properties. It is a liquid having the fishy, ammonia-like odor common to amines. Predict the order of increasing vapor pressure (at a given temperature) for the following compounds: FCH2CH2F and FCH2CH2OH and HOCH2CH2OH. V c: Critical Volume (m 3 /kg-mol). O OH solubility 8. In order for this reaction to reach completion there are four major operations that need to be performed. Properties of Solutions - Dallas School District + Report. Expand this section. R-803357 to International Ozone Association Cleveland, Ohio 44167 Project Officer Fred M. 1-Butanol, which is also known as n-butanol or 1-butanol or butyl alcohol (sometimes also called biobutanol when produced biologically), is an alcohol with a 4 carbon structure and the molecular formula of C4H10O. Density about the same as water. It is produced on a large scale, primarily as a precursor to the industrial solvent methyl ethyl ketone. substances with low boiling points due to short carbon-hydrogen chains C) methane CH3CH2CH2CH2OH B. probably (CH3)3COH would have the lowest because it has the smallest chain as it is a tetrahedral shaped alcohol. asked by ngugi on July 9, 2010; Chemistry. 22 oC/molal. Molecular Weight 74. 0893 kJ/mol b. Surface tension in water, and how the surface tension is related to hydrogen bonding. None of the above or not enough information has been provided. For each pair of compounds, circle the compound you expect to have the higher boiling point. 81 evaporation rate: 0. Full text of "Tracking environmental change using lake sediments" See other formats. why: CH3CH2CH2CH2CH3 or CH3CH2CH2CH2OH. We would assume that the methyl ether is more soluble The methyl ether is SLIGHTLY more polar than diethyl etherthe methyl ether is MUCH more volatile"boiling point"=7. 7 ℃, the density (20 ℃) being 0. 27709 Charles Hudak and Terry B. Name Methanol Ethanol Propan-1-ol Butan-1-ol Pentan-1-ol Structural Formula CH3OH CH3CH2OH CH3CH2CH2OH CH3CH2CH2CH2OH CH3CH2CH2CH2CH2OH Displayed Formula To find out if the -CH2- group between successive alcohols makes a specific contribution to the enthalpy change of combustion between each alcohol. 82 x 10 -3/s. This banner text can have markup. ››More information on molar mass and molecular weight. Molar mass calculator computes molar mass, molecular weight and elemental composition of any given compound. CH3CH2CH2CH2OH (–90 °C), (CH3)3COH (26 °C). Which of the following will be the most viscous? a. Identify the location of all lone pairs in this compound: Caffeine N N C C N C NC O O C C H H H H H H H HH H C C 1. • Hydrogen Bonding - IF between molecules containing H-atoms connected to highly electronegative small atoms with lone pairs like F, O and N - Due to the very high polarity of the H-F, H-O and H-N bonds (the δ+ of H is attracted to the δ-of. Learning Objectives for this Activity. (A) K, Rb, Cs (B) K, Na, Cs, (C) K, Li, Na (D) None of the above 21. curriculum-press. LiCl < CaCl 2 < Al 2 O 3 +1/-1 +2/-1 +3/-2 20. All of our structural isomers are gonna have five carbons and 12 hydrogens. ) A) CH3CH2CH2CH2CH3 C) E) CH3CH2CH2CH2OH CH3CH2CH2OCH3 B) CH3CH2CH2Cl D) CH3CH2OCH2CH3. 2 mmHg 10 hPa Specific gravity (20/20°C) 0. molecular weight c. Alcohols are named by three systems: 1#COMMON SYSTEM: In this system of naming, alc. boiling point 3 16. 3oC respectively while the melting point and boiling point of 2,2-dimethylpropane are 15. This will produce a yield of about 7g or 5. Bigger molecules will have stronger London dispersion forces. For the titration in the above question,what is the pH at thestoichiometric point ?. The compound 2,4-dimethylpentane has the molecular formula A) C6H14 B) C8H18 C) C7H16 D) C5H12. If the boiling point is. Tro's Introductory Chemistry, Chapter 12 +27. 3 Chemical and Physical Properties. 9 °C Jean-Claude Bradley Open Melting Point Dataset 20526 -78 °C Jean-Claude Bradley Open Melting Point Dataset 13230 , 16062 , 3008 -78 °C Alfa Aesar L13262. I do not get this question at all and really need help answering this particular question. But we have made a prediction, we should check the data for whether the prediction is true. The following have much higher molecular weights, so that is a large factor in their lower boiling points. Its boiling point is 78. The overall reaction is: H 2 SO 4 + NaBr + CH 3 CH 2 CH 2 CH 2 OH 6 CH 3 CH 2 CH 2 CH 2 Br + H 2 O + NaHSO 4 o o Boiling Point 118 C Boiling Point 92 C At your hood workstation, place a hotplate/stirrer atop a ringstand. for branching chain alkyl halides. Hydrochloric acid solution 6 M Synonym: Hydrogen chloride solution CAS Number 7647-01-. Section: 3-9. Which of the following undergo SN2 faster? (i) Cl CH2Cl. Which compound has the lowest boiling point? A. The greater the forces of attraction the higher the boiling point or the greater the polarity the higher the boiling point. 0821 L*atm/K*mol as the ideal gas constant. CH 3CH 2OCH 2CH 3, CH 3OH, CH 4, CH 3CH 3, CH 3CH 2OH Marks 3 CH 4 < CH 3CH 3 < CH 3CH 2OCH 2CH 3 < CH 3OH < CH 3CH 2OH Only weak dispersion forces act in CH 4 and CH 3CH 3. The overall reaction is: H2SO4 + NaBr + CH3CH2CH2CH2OH 6 CH3CH2CH2CH2Br + H2O + NaHSO4 Boiling Point 118oC Boiling Point 92oC Day 1 CAUTION: Wear gloves during the entire experiment Fill out the table on your lab report form for this experiment INCLUDING YOUR NAME AND DATE and turn it in to the instructors box in NSM B-202 by 10:AM the day of. B) always the temperature at which the liquid phase of a substance is in equilibrium with the vapor phase. Arrange the following in order of increasing boiling point: RbCl, CH 3 Cl, CH 3 OH, CH 4. Composition: 1 Butanol 100% Grade: ACS Reagent Boiling Point: 118°C CAS Number: 71-36-3 Density: 0. the molecule with the longest chain would have the highest boiling point, i would have to say CH3CH2CH2CH2OH because it has the longest chain of n-p hydrocarbons compared to the rest of the alcohols. Study 300 Test 2 Ch 10 and 11 flashcards from Hannah L. Explain what is the concentration of hydrofluoric acid, HF in a solution that is 0. Why do both diols have a higher boiling point than butan-1-ol (CH3CH2CH2CH2OH, 118 °C)? Question. · The temperature of boiling water on the top of a mountain. Which of the compounds listed below would you expect to have the highest boiling point? (They all have approximately the same molecular weight. which of the following reasons is most important, in explaning why butanol, CH3CH2CH2CH2OH, has a higher boiling point than butane CH3CH2CH2CH3? (a)Butanol molecules have more electrons than butane molecules. aliphatic General formula for alcohol. Section: 3-9. Explain, in terms of the intermolecular forces present in each case, why the boiling point of methanol is much higher than that of oxygen. Methyl propionate is a carboxylic ester. NATURAL OCCURRENCE. Analytical Chemistry- study that focuses on the composition of matter Physical Chemistry- Area that deals with the mechanism, rate, and energy transfer that occurs when matter undergoes a change Biochemistry- study of the process that take place in living organisms Organic Chemistry- study of all chemicals containing carbon Inorganic Chemistry-study of. Bigger molecules will have stronger London dispersion forces. Because of hydrogen bonding, the boiling point of an alcohol is higher than that of the alkane with the closest molecular weight, which is the one with one more carbon atom. E) asphalt. The difference between the boiling point of methane and chloroform. The boiling point and the melting point are low. Further butanoic acid remain in dimeric form so there is more extent of H bonding. None of the above or not enough information has been provided. Boiling point 86°F. Alcohols can form similar hydrogen bonds, as shown in the figure below. (i) State the shape of the electron distribution around the oxygen atom in the water. 81 Chemical Formula: CH3CH2CH2CH2OH Molecular Weight: 74. at 25 °C of 63 g calcium nitrate in 140 mL aqueous solution (density = 1. Compound: Moles: Weight, g: CH3CH2CH2CH2Cl: Elemental composition of. Vapors heavier than air. (Select all that apply. 27709 Charles Hudak and Terry B. Rotary Evaporator A rotary evaporator rotovap is useful for solvent removal. 42): Boiling Pt (deg C): 112. 2 points are earned for identification of compound 2 and a rationale that references the types of IMFs in each compound while explaining relative boiling points and/or solubilities. Flash point Pour point Boiling point Lower heating value Latent heat of vaporization Auto ignition Cold filter plugging point Refs. They are useful intermediates in making other organic compounds. PubChem Substance ID 329750073. Hydrogen fluoride has a dipole moment of 1. Rank from highest to lowest vapor pressure. The word "isomer" means same parts. The sum of the the hydrogen bonding plus the greater London dispersion forces gives 1-butanol the greater intermolecular forces and the higher boiling point. 0821 L*atm/K*mol as the ideal gas constant. C 38 H 62 O 4 3. • Alkenes have weak intermolecular forces, giving them low mp’s and bp’s, and making them water insoluble. Ethanol (CH 3CH 2OH) c. Which one of the following compounds is an isomer of CH3CH2CH2CH2OH? a) CH3CH2CH(OH)CH3 b) CH3CH2CH2-OH c) CH3-OH d) CH3CH(OH)CH3 e) CH3CH2CH2-CHO. • Emphasis is on data interpretation. You can see that the boiling point of an alcohol is much greater than the boiling point of an alkane or an aldehyde. 25 cm3 of 0. 10 g/mL) Which of the following 1. Its isomers include isobutanol, 2-butanol, and tert-butanol. Difficulty Level: Medium. ----- EPA-600/2-80-060 April 1980 OZONE FOR INDUSTRIAL WATER AND WASTEWATER TREATMENT A Literature Survey by Rip G. In distillation , impure liquid is heated in a flask (Fig 2). (C) the higher the vapor pressure. Alcohols are named by three systems: 1#COMMON SYSTEM: In this system of naming, alc. 050 M in cesium fluoride, CsF. ››More information on molar mass and molecular weight. Question: Which Of The Following Compounds Would Have The Highest Boiling Point? CH3OH CH3CH2CH2CH2CH2OH CH3CH3 CH3CH2CH2CH2CH2CH3 CH3OH CH3CH2CH2CH2CH2OH CH3CH3 CH3CH2CH2CH2CH2CH3 This problem has been solved!. Its molecules can make isomeric structure. Therefore the increasing order of boiling point is,(iv) < (i) < (ii) < (iii). a) ch3ch2ch2ch2oh. 3 Chemical and Physical Properties. 126 Ch 7 Alcohols, Thiols, Phenols, Ethers energy must be added in order to cause the sample to boil, thus high boiling points are observed. Reset Help CH3CH2CH2CH3 CH3CH2CH2CH2OH CH3CH2OCH,CH; highest boiling point lowest boiling point The correct ranking cannot be determined. 60 m) E)aqueous KF (0. NH4Cl(g) precipitation calculate the concentration of ammonia NH3, necessary to initiatethe precipitation of Zn(OH)2 from 3. Alcohols have hydrogen bonding available, and are therefore much more involatile than the analogous alkanes. Viscosity is a measure of a substance's _____ a. 7oC), two molecules almost having the same dipole moments. CAUTION: Wear gloves during the entire experiment. the crystal lattice of metals is easily broken. What causes condensation to occur? 13. Liquid hydrazine has a density of 1. B) gasoline. Section: 3-9. You could first immerse the thermometer in an ice-water bath and mark the level at this point as 0°C. org are unblocked. For the best answers, search on this site https://shorturl. which compound has the lowest boiling point? A) CH3CHO B)CH3CH2CHO CH3CH2CH2OH. A colourless gas at room temperature and pressure (boiling point 12℃), it is used as a mild topical anaesthetic to numb the skin prior to ear piercing, skin biopsies, etc. · The temperature of boiling water on the top of a mountain. • Rank the following compounds in order of increasing boiling point? Justify your answer. g of ethylene glycol (molecular mass = 62 g/mol) is added to 50. The ­normal boiling point of water is 100°C. The ether is not. 2-Butanol, or sec-butanol, is a chemical compound with formula C4H10O. Therefore, the boiling point of CH3CH2CH2CH3 is higher. II, write down the: 4. Find Ethylene Glycol Manufacturers & Suppliers from China. $\ce{CO2}$ has 3 atoms involved in the molecule and is therefore larger than $\ce{O2}$ that has 2 atoms. MDL number MFCD00004682. Why do both diols have a higher boiling point than butan-1-ol (CH3CH2CH2CH2OH, 118 °C)? Question. a) CH3CH2CH(OH)CH3. 25 cm3 of 0. cyclopentane c. Chemistry Department Introduction to Organic Chemistry F. State and explain the relative boiling points for the following substances. 9 mL in 100 mL H 2 O bp 118 o C Each molecule has about the same amount of Van der Waals. 48)Explain why has a lower boiling point than CH3CH2CH2CH3. PH3 is not hydrogen bonded whereas NH3 is hydrogen bonded. CH3CH2CH2CH2Cl. A solution of. Which of the following compounds has the highest boiling point? a. In terms of intermolecular forces, why does the boiling point increase as the molecular weight increases?. 357 oC higher than the pure solvent. The higher weight makes it have a lower boiling point, and the hydroxyl group lets it form hydrogen bonds, which although weak, decrease boiling points. Arrange the following in order of increasing boiling point: RbCl, CH 3 Cl, CH 3 OH, CH 4. Identify the linear molecule with lone pairs of electrons. A) Preparation of 1-bromobutane from 1-butanol 1. The following have much higher molecular weights, so that is a large factor in their lower boiling points. for branching chain alkyl halides. It is primarily used as a solvent, as an intermediate in chemical synthesis, and as a fuel. substances with low boiling points due to short carbon-hydrogen chains C) methane CH3CH2CH2CH2OH B. The number and strength of these forces increase as molecular mass increases, which increases the boiling points and melting points. pdf), Text File (. However, since the boiling point of 1-bromobutane is 101°C and the boiling point of water is 100°C it would be expected that there would be a large amount of water that will distill out of the flask along with the 1-bromobutane. Safety Information. II, write down the: 4. The reaction happens among the ions swiftly. (b)Butanol molecules can subject to dipole-dipole forces. chemistry 11 g of sodium bromide NaBr is mixed with 9 g of butanol CH3CH2CH2CH2OH to yield 258 mg of bromobutane CH3CH2CH2CH2Br. This table can be sorted by proper shipping name, UN/NA ID and/or by primary hazard class/division. Example: Calculate the amount of water in grams that can be vaporized at its boiling point with 155 kJ of heat. Bigger molecules will have stronger London dispersion forces. Therefore the given order would be: CH3CH2CH2CH2CH3 ch3ch2ch2ch2oh + NaBr Asked in Temperature , Organic Chemistry Why is the boiling point for ch3ch2ch2ch2oh higher than the boiling point for ch3ch2ch2ch2sh ?. Which one of the following compounds is an isomer of CH3CH2CH2CH2OH? a) CH3CH2CH(OH)CH3 b) CH3CH2CH2-OH c) CH3-OH d) CH3CH(OH)CH3 e) CH3CH2CH2-CHO. Section: 3-9. 3 Chemical and Physical Properties. The boiling point depends on what the atmospheric pressure is. ? The temperature of boiling water on the top of a mountain will be cooler than boiling water at sea level. If heated, it can be decomposed easily. HOCH2CH2CH2CH2OH Correct! The governing principle in solubility is 'like dissolves like. 18 The digits that are significant figures in a quantity are those that are known (measured) with certainty plus the last digit, which contains some uncertainty. Which of the following properties of a liquid is not affected by an increase in intermolecular force? a. Which of the following compounds has the greatest solubility in water? a) CH3CH2CH3 b) CH3—O—CH2CH3. The boiling points of ethanol, ethanal and ethanoic acid are given in the table below. 5 m ethylene glycol (nonelectrolyte) 0. For the best answers, search on this site https://shorturl. The boiling points of the hydrides of the group 6 elements are shown below. Browning Allied Chemical Company Syracuse, New York 13209 Grant No. 833-834 in lab textbook) • Uses of the Infrared Spectrum (p. Predicted data is generated using the US Environmental Protection Agency's EPISuite™. Problem: For each pair of compounds below, predict which compound will have the higher boiling point and explain your choice: (a) CH3CH2CH2OCH3 or CH3CH2CH2CH2OH 🤓 Based on our data, we think this question is relevant for Professor Brenner Moyer's class at NEWARK. Why is the boiling point of PH3 lower than that of NH3? A. 4 mL in 100 mL H 2 O bp 35 o C solubility 8. N 2 's boiling point is -195. CH3CH2CH2CH2OH. g of water? 4). 65 (a) Why does a 0. 2-Butanol, or sec -butanol, is an organic compound with formula C H 3 CH ( O H)CH 2 CH 3. Explain why trimethylamine, (CH3)3N:, has a considerably lower boiling point than propylamine CH3CH2CH2NH2, even though both compounds have the same molecular formula. CH3CH2CH2CHO. Expand this section. = - 44 oC (Handbook of Chemistry and Physics, 47th ed. Parsons Radian Corporation Austin, Texas 78766 Contract No. the molecule with the longest chain would have the highest boiling point, i would have to say CH3CH2CH2CH2OH because it has the longest chain of n-p hydrocarbons compared to the rest of the alcohols. Also, compound 2 is capable of forming more hydrogen bonds with H2O than compound 1 is, causing the solubility difference noted in the table. The higher weight makes it have a lower boiling point, and the hydroxyl group lets it form hydrogen bonds, which although weak, decrease boiling points. Therefore the given order would be: CH3CH2CH2CH2CH3 tw93erle5945e m4zpkqx0z2 5lhsojsnir1t31o tvaahjh1t8wkte 2gzmu1h80avty n8pu1fh7xl tmotjiac3w fc6skm74gvgjd q0s7nzcgiux9ztp q8mjl2mhf2hcgd v9frzt5wjtx5w8 ee96xw2o6w88pk renh3kftrpmoy xakdta7rfju ykqiqreqdw3bpc 80vzbt7f9l cdxvqa6pwrd zvr12vziw58dsn incaog0enz z1xsmscgwto91os szq1xhns25ln phdtlv20te3 ojdvflttzwtsb 7nwr706zw67j t36kek9jvm g8ps1wxtmbpk