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- The procedure is as follows: Weigh out around 0.3 g of cobalt chloride hexahydrate, CoCl2•6H2O, and place it in a clean, dry beaker. Dissolve it in 20 mL of 95% ethanol (95% ethanol contains about 5% water). Record your observations. Place about 3 mL of the ethanolic cobalt chloride solution in each of five dry test tubes that you have labeled A-E. Place B in a hot water bath. (See figure and instructions below.) Place C in an ice-water bath. Wait a few minutes for them to equilibrate to the temperatures of the baths. Compare the tubes with the control (the ones still at room temperature, i.e. A, D, and E), and record your observations. Add 5 drops of a saturated aqueous sodium chloride solution to D. Observe the result and compare with A. NOTE: any clear or white precipitate that forms in the bottom of this test tube is sodium chloride coming out of solution and is not involved with the chemical reaction that we are studying. Add 3 drops of distilled water to E. Compare with A and D.…Q No 10 Kindly solve this question correctly in 30 minutes and get the thumbs up please show me neat and clean work for Kindly provide correct solutionwhich of the following statements regarding purification by recrystallization is false? i. activated charcoal removes insoluble impurities. ii. water is the best recrystallization solvent for organic compounds. iii. slow cooling permits the exclusion of the solvent from the recrystallized solid. a. i, ii, and iii b. i and ii c. i only d. ii and iii
- Write TRUE if the underlined word/phrase makes the statement correct. Otherwise, write the correct WORD/PHRASE that will make the statement true. If there are two bold words/phrases in a number, write your answer for EACH of the bold words/phrases 1. 6-hydroxy-1-naphthoic acid is soluble in 5% NaOH and soluble in 5% NaHCO3. 2. The addition of excess charcoal would decrease the % recovery in the purification by recrystallization. 3. If the target compound is contaminated with impurity, the melting point will be higher than the theoretical value and the melting range is large.COMPLETE THE STATEMENT: 1. Before manufacturing process begins the sources of suitable fragrances are ______ in the manufacturing centre. 2. Oils are ______ from plants and other substances by several methods 3. During ________, flowers are spread on glass sheets coated with grease. 4. _________is the oldest and least complex method of extraction. 5. During Aging, the_____ tests whether the perfume has the specific smell or not.Answer only the one question below. This is about a labwork in chemistry, i need your help. These are the solute to be dissoolve in water and vegetable oil: Acetic acid (vinegar) Sucrose (sugar) Monosodium glutamate (vetsin) Cellulose (cotton fiber) Isopropyl or ethyl alcohol Fatty acid salts (soap) Kerosene Naphthalene balls (NOTE: So this 10 will be mixed with water and vegetable oil) Question: 1. What do you think is the main difference of the outcome of the solution of those who are mixed with water and those who are mixed the mixed with vegetable oil? Please show the difference and similaries(if theres any).
- I NEED THIS ASAP PLEASE. With step by step solution. Please, pleasevisual differences between the hydrated sample and the dried, anhydrous form?(3) GUIDE:- Substituted working formula- From the general formula, directly present your answer with substituted values already- Format: "F=_+_-_" (examples: F=2+1+1 , F=1+2+2 ... )- Spaces and other formats will invalidate your answer- Degrees of freedom- Multiple choice, each item is equivalent to one QUESTIONS TO ANSWER: 3a. What is the number of components for the formulation: "Mineral oil + isopropyl alcohol"? CHOICES: A. ONE, B.ZERO, C.TRHEE, D. TWO 3b. Present your working formula for the formulation: "Mineral oil + isopropyl alcohol" 3c. What is the degrees of freedom for the formulation: "Mineral oil + isopropyl alcohol"? CHOICES: A. ONE, B.ZERO, C.TRHEE, D. TWO
- #1. Part A. in a drug discovery program, a hit compound________. A. Shows activity in an animal model of disease B. Is active in target/ whole-cell assays in vitro C. Is purchased from a commercial vendor D. Is derived from screening natural product libraries Part B. When using TLC to monitor an organic chemistry reaction, which could be an indication that your desired reaction has gone to completion? A. the stationary phase changes colors B.the mobile phase runs to the top of the tlc plate C.the starting material spot disappears and a new spot appears D,the starting material spot remains on the tlc plateFor this statement, answer True or False and explain your answer briefly. Polarity is the only characteristic used in liquid-liquid extraction to isolate a poison from the biological matrix.Using an isopropyl alcohol, put a few drops on your palm then rub the area for a fewseconds. What is your observation? Apply the same procedures using any vegetableoil and water. What property of alcohol was exhibited relative to the vegetable oil and water? Elaborate your answer.