When performing the extraction process for eugenol, what are the most common problems that can be encountered? Give at least two and give also the remedy/resolution to solve such problem.
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When performing the extraction process for eugenol, what are the most common problems that can be encountered? Give at least two and give also the remedy/resolution to solve such problem.
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- How many mL of 0.779 M HNO3 are needed to dissolve 5.15 g of BaCO3? esc 1 F1 AAB 2 Q *** F2 W # 3 80 F3 E $ 4 000 000 F4 2HNO3(aq) + BaCO3(s) Ba(NO3)2(aq) + H₂O(l) + CO₂(g) R Cengage Learning | Cengage Technical Support % er oo 5 F5 MacBook Pro T A 6 F6 & 7 Y F7 mL * DII U F8 8 DO 9 1A student added a total of 75 mL sodium hydroxide to titrate an amino acid solution of unknown concentration. They also calculated that they added a total of 14 mL of sodium hydroxide to arrive at pH 2.6 and a total of 32 mL of sodium hydroxide to arrvive at pH 4.8. Information about the molarity of the sodium hydroxide solution used and the initial volume of the unknown amino acid can be derived from the image. What was the initial concentration of the amino acid solution in milimolar (mM)? The calculations must be presented such that those can be recapitulated by the marker. Provide the answer with no decimal places. Show all details of your working out. State the answer in a full sentenceTRUE OR FALSE 1. Medicated elixirs are advantageous in adjusting the dose that may be increased or decreased by simply taking more or less of the elixir. 2. It is impossible to increase or decrease the amount taken of one ingredient without and automatic and corresponding adjustment in the dose taken of the other. 3. Then the alcoholic solution is added to the aqueous solution in order to maintain the highest possible alcoholic strength. 4. Saccharin is used for elixirs with low alcoholic content required only in small amounts. 5. Proportion of alcohol varies widely in elixirs since the individual components. 6. The final mixture of elixir will be clear since the separation of some of the flavoring oils by the reduced alcoholic concentration. 7. Permission of the oil globules oil to coalesce leads to difficulty in filtration. 8. Wetting the filter paper and collection flask using the solvent ensures continued solubility of the alcoholic ingredients. 9. Elixirs are best stored in…
- A) What is the concentration of benzene (in ppm) in the original solution? B) What is the concentration of hexane (in ppb) in the original solution?When dissolved in water, flunitrazepam, also known as roofies or the "date rape" drug, is difficult to detect because it is colorless, odorless, and tasteless. Recently, a straw has been developed that changes color when placed in a drink spiked with flunitrazepam. A woman at a bar is worried that flunitrazepam was slipped into her water when she left it unattended. She places one of these new color-changing straws into the water and the straw does not change color. Based on this result, is the woman's drink a pure substance or a mixture? mixture pure substance If it is a pure substance, is it an element or a compound? compoundFor the CO2 impact experiment station: 1) Obtain two plastic cups, red cabbage indicator, a straw, and plastic wrap. 2) Fill each cup approximately one-quarter to one-third full of tap water and add ~10 mL of the red cabbage indicator. 3) Place the two cups side by side on a sheet of white paper. 4) Place the straw into one of the beakers and cover that beaker with the plastic wrap. 5) Carefully blow bubbles into the test cup for 3 min. and observe both cups. 6) Compare the color to the control cup and record any differences. This the Question: Did the beaker with the solution into which CO2 was bubbled change pH/color? By how much? Is this what, you would predict, based on your knowledge of the chemistry of CO2?
- Table of chemicals and reagents with their physicochemical properties (name, molecular formula, molecular weight, pKa, melting point, boiling point, etc.) Write a short outline or a flow diagram of the procedure List and safety issues Read and understand the MSDS information for each chemical used in this practical Experimental procedure Please do not scratch the clear sides of the UV cuvettes as this will invalidate your results. Part 1: Preparation of a calibration curve A calibration curve should be constructed using at least five concentrations of the pure paracetamol standard supplied in the range 3-15 ug/mL as follows: Weigh about 150 mg of paracetamol accurately and transfer to a 200 mL volumetric flask. Add 50 mL of o.1 M NaOH and dilute to about 100 mL with deionised water (DI). Shake and make up to volume with DI water. Dilute 10 mL of the resulting solution to 100 mL (volumetric flask) with DI water (= stock solution). Prepare standard solutions containing 3, 6, 9, 12 and 15…15 of 19 I Review | Constants | Periodic Table A red blood cell is placed into each of the following solutions. Indicate whether crenation, hemolysis, or neither will occur. Solution A: 2.36 % (m/v) NaCl • Solution B: 4.09 % (m/v) glucose • Solution C: diştilled H20 • Solution D: 7.71 % (m/v) glucose • Solution E: 5.0% (m/v) glucose and 0.9% (m/v) NaCl Drag each solution to the appropriate bin. • View Available Hint(s) Reset Help A D E Crenation Hemolysis NeitherTwenty sodium salicylate tablets labeled 325 mg were dispersed in sufficient water to make 200.0 ml. A 15.0-ml aliquot of the filtrate was titrated to a bromophenol blue end point in the usual way by 29.11 ml of 0.1000 N hydrochloric acid. Calculate the amount of sodium salicylate in each tablet and, from that, the percentage of the labeled amount. Hint: Use the above formula.
- Please do't provide handwritten solutionPlease don't provide hnad writtin solution.... I need explation solution and step solution...Give only typing answer with explanation and conclusion To make a 50 ml 0,05% Tween-20 solution from the stock solution 25% Tween-20. what should be the amount of stock solution you have to use?