tal v أنظمة التلم الإلكارولی Old Courses Time left 0:32:54 Using the following information in the table below, the best solvent to extract A from water is Compound Solubility in g, per 100 g of solvent Water Dichloromethane Ethanol Acetone 2. 12 14 2 10 7 11 O a. Dichloromethane O b. Water O C. Acetone O d. Ethanol TOSHIBA A

tal v أنظمة التلم الإلكارولی Old Courses Time left 0:32:54 Using the following information in the table below, the best solvent to extract A from water is Compound Solubility in g, per 100 g of solvent Water Dichloromethane Ethanol Acetone 2. 12 14 2 10 7 11 O a. Dichloromethane O b. Water O C. Acetone O d. Ethanol TOSHIBA A

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter14: Chemical Equilibrium

Section: Chapter Questions

Problem 94AP

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Youlube G how to get clean after period X A www-awn.aleks.com/alekscgi/x/lsl.exe/1o_u-IgNslkr7j8P3jH-lijkPWvZoZLqKt1FLIlq7wcPWKzBYGfE9IMFjvvh3x_rz6naF9YTN80Bms6y067EgyeOUwHKJOrzx. O STOICHIOMETRY Calculating and using the molar mass of diatomic elements Iffe A chemist measures the amount of nitrogen gas produced during an experiment. She finds that 75.5 g of nitrogen gas is produced. Calculate the number of moles of nitrogen gas produced. Round your answer to 3 significant digits. mol Explanation Check © 2021 McGraw-Hill Education. All Riahts Reserved. Terms of Use I Privacy Acce étv MacBook Air II
Ti Which of the following sentence is incorrect: O Reprecipitation can be used to remove coprecipitated impurities O Occlusion is a type of coprecipitation in which a compound is trapped within a pocket formed during crystal growth O Coprecipitation may cause either positive or negative errors O Digestion is a process in which a precipitate is heated in the presence of solution to improve the purity and filterability In peptization, the size of coagulated colloid increases and becomes stable 00 SHOT ON MI 9T Al TRIPLE CAMERA
10:31 „0. O O ? 86%i E AIATS For Two Year Medic... A 88 /180 (02:53 hr min Mark for Review HX (C,H,CO),O, The product (A) can be obtained by using HCI HBr HI НЕ Clear Response II
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When we make a calibration curve, we want the range of calibration standards to the analyte concentrations in the samples. If this is not the case, we will have to the samples, depending on the analyte concentration. O Exclude, concentrate or dilute O Include, spike O Include, concentrate or dilute None of These O Exclude, calculate the concentration of You have prepared a set of calibration standards for nitrate in surface water where you are using Beer's Law to generate the calibration curve. The calibration equation for the standards you have prepared between 1 and 15 ppm is y = 0.0820x +0.00900. You analyze a 3.00 mL water sample and generate an absorbance response of 1.12. You report the concentration of nitrate in this sample as: O None of These O 4.52 ppm O The concentration is out of range so it cannot be reported O 13.5 ppm O 13.5 absorbance
The air in a recently used classroom 9m x 7m x 9m tested 0.12% carbon dioxide. How many cubic meters of fresh air must be admitted per minute in order that 10 minutes later it shall contain not over 0.06% carbon dioxide. Fresh air contains 0.04% carbon dioxide. Assumeimmediate mixing of fresh with stale air. (A) 14 (B) 11 (C) 15 (D) 19 (E) 17
Calculate Ksp = () A2BO3 ->2A*+ BO32- Molar concentration of At = Molar concentration of BO32- = 2 M %3D (*Answer in whole number only. No unit)
The equilibrium for the vorious proportions of the dissociation of the liquid solutions of amyl ester of dichloroacetic ccid (CHCI,.COOC,H,} into the acid (CHCLCOOH) and amylene (C,H was investigated. The inltial amount tor the CHCI,COOC.H used Is 1 mole. Completethe table below Let b the inltial moles of omylene, V the totdl volume cof mixtures in iters, x. be the number of moles of V. 1.05 0.215 0.455 3.12 .af equibrium ond Kc ester outionum constont n.moles per iter. 2.61 0.401 4.45 0.628 3.54 0.794 0.658 3.44
CEA a Ama W CEA zoom HMAC=4f5e010fa2b0f09f550afc98d120614d#10001 e URL Part B Given the two reactions Hyd 3. PbCl2 (aq) = Pb²+ (aq) + 2Cl¯ (aq), K3 = 1.81x10-10, and 4. AgCl(aq) = Ag+ (aq) + Cl¯(aq), K4 = 1.21x10-4, what is the equilibrium constant Kfinal for the following reaction? Kfinal Submit Express your answer numerically. ►View Available Hint(s) 0 0 CEA | Fun | OpF | Opr| Sch | G bes Cro VE ΑΣΦ MacBook Pro PbCl₂ (aq) + 2Ag+ (aq) = 2AgCl(aq) + Pb²+ (aq) P Pearson ? < IX □ ☆ + 5 of 16 Review I Constants I Periodic Table EN 0
eleganceextreme1 X (208) + X 7571&snapshotld=1324548&id =563649000&takeld=4bfba59b09f0e5b& aSearch this course References Use the References to access important values if needed for this question. A student ran the following reaction in the laboratory at 639 K: H2(g) + I>(g 2HI(g) A-Z When she introduced 0.311 moles of HI(g) into a 1.00 liter container, she found the equilibrium concentration of HI(g) to be 0.249 M. Calculate the equilibrium constant, K, she obtained for this reaction. Kc Submit Answer K from [Initial] and One [Equilibrium]: This is group attempt 1 of 5 Next Autosaved at 12:59 PM Back 1:05 PM 4x 11 9/24/2019 hp delete prt sc insert 12 f11 10 144
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Apple seeds contain amygdalin, a substance that releases cyanide into theblood stream. if 3.5 kg of apple seeds contain 750 milligram of amygdalin, theconcentration of cyanide in ppm will be.. * Non of these O 214.28 0.0046 O 4.66 O 0.214