Draw and label a moisture sorption isotherm for any product of your choice at different temperature conditions of 0ºC, 25ºC, and 45ºC. Please explain WHY your graph looks like it does.
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Draw and label a moisture sorption isotherm for any product of your choice at different temperature conditions of 0ºC, 25ºC, and 45ºC. Please explain WHY your graph looks like it does.
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- Which of the following are safe and effective techniques for drying organic solids recovered from a filtration? (Choose all that apply). a. Spreading the solid evenly on a watch glass or aluminum weigh boat and placing it in an oven set at a temperature 20 °C below the substance's expected melting point. b. Placing it on top of a hotplate set on low. c. Leaving the solid on the funnel with the vacuum on for several minutes. d. Blowing on the solid.Write the Quality Control For the Chemical (Exfoliant) ? Please answer at your own words.Provide a table with molecular weights, boiling points, and density values for the starting material and product. Please also list any hazards of these two compounds based on their SDS forms Material • Balances • Beaker- 50 mL • Boiling beads • Clamps • Filter paper- 11 cm • Funnel • Graduated cylinder- 10 mL and 25 mL • Round Bottom flask (50 mL) • Rubber stopper • Separatory funnel (125 mL) • Stir hot plate with aluminum heating bath and temperature controller • Test tube- 2 (12x75mm) • Thermometer (-10 ◦C -200◦C) Chemicals and Reagents • 2% Silver nitrate (AgNO3) in ethanol • Saturated NaHCO3 soln. • HCl [12M] • Saturated NaCl soln. • 2-methyl-2-propanol • Sodium sulfate, Na2SO4
- What are the available brands of chemical exfoliators? please write at your own easy words.Why is it important to handle the TLC plate in such a way that your fingers do not come in contact with the coated surface of the plate?Draw a vacuum filtration setup and discuss possible advantages and disadvantages thereof.
- What are the conditions that hamper the performance of the fume hood? What do you think are the things to be done to ensure that the fume hood will be working efficiently? Are there things that are needed to be fixed or redesigned before the fume hood is commissioned for usage?When using the centrifuge, what safety precautions should be followed?What filtration method would you use to separate the organic layer from the drying agent? Group of answer choices Centrifugation Gravity filtration Vacuum filtration
- Fill in the blanks with the correct awnserThe shorter distance that the solvent travels on the TLC plate results in a better separation of compounds. Group of answer choices True Falsecomplete the table Procedure Preheat the hotplate stirrer with an aluminum block to 45–50 °C (do not exceed 55 °C). To a clean 5-mL conical vial equipped with a Teflon-coated magnetic stir vane, add 4- bromo-nitrobenzene (152 mg, 0.750 mmol, 1 equiv) and THF (150 μL). Cap the vial and stir the mixture at 45–50 °C for about 30 s to partially dissolve the substrate; don’t stir too fast to avoid splashing the contents on the walls of the vial. Add ammonium chloride (120 mg, 2.2 mmol, 3 equiv), carbonyl iron powder (CIP; 210 mg, 3.80 mmol, 5 equiv), the solution of TPGS-750-M (2% in water, 1.5 mL), and 1 drop of concentrated HCl. Cap the vial and place it on the hot plate stirrer, stirring at 45–50 °C. While the reaction mixture is stirring, prepare an approximate 2% solution of the reactant in DCM (1 sample per 3–4 students) by dissolving 10–15 mg of 4-bromo-nitrobenzene in 0.5 mL of methylene chloride. Prepare the solvent mixture for the mobile phase (25% ethyl…