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The Coca- cola is diluted and reacted with molybdate/metavanadate reagent before the %T is measured.
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- 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…TRUE 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…Tom, an analytical chemist, bought a bag of decaffeinated coffee from a grocery store. However,Tom suspected that he might have received regular coffee and therefore decided to analyze hiscoffee for caffeine. In the lab, he took 0.5 mL of the brewed coffee and diluted it in water tomake a 100.0 mL solution. He performed four analyses and found the concentrations to be 4.69,3.99, 4.12, and 4.50 mg/L, respectively. (Assume the density of all solutions is 1.000 g/mL,1oz= 28.35 mL).(a) Report the concentration (in mg/L) of caffeine in the brewed coffee using the format asaverage ± standard deviation. (Note this is not the concentration in the diluted solution.)(b) Look up the caffeine content of regular vs. decaffeinated coffee. Do you think that Tom wasgiven the wrong type of coffee?(c) Caffeine intake of 300 mg per day reportedly has no adverse effects in the vast majority ofthe adult population. If Tom drinks 3 cups (8 oz/cup) of this coffee daily, is his intake withinthis known safe…
- During the lab procedure a filtered pipette was used to measure out 1.0 mL of the saturated salicylic acid solution. The filter had a bit of cotton on the tip. What component of the mixture was being filtered out?A sample of naphthalene is contamined with a small amount of anthracene. The melting point would be about the sample as the pure sample higher and the range broader than the pure sample lower and the range more narrow than the pure sample lower and the range broader than the pure sample higher and the range more narrow than the pure sampleEx. 2 The concentration of glucose in the cerebrospinal fluid (CSF) is usually 60-75% of the concentration of glucose in blood plasma. The patient's plasma glucose concentration was measured at 81 mg / dL. Does the concentration of 540 ppm in the cerebrospinal fluid fall within the expected range?
- 5 mg of a protein is dissolved in 0.1 mL of distilled water (final volume) to give a final concentration of 0.5 mM. What is the molecular weight (in kDa) of the protein? Show your unit conversion step by stepAn experiment is started with 6g of a 1:1:1 ratio mixture of benzoic acid, 2-naphthol, and hydroquinone dimethyl ether. The experiment is finished with 0.2 g of 2-naphthol. What is the percent recovery? 10% 50% 3% 16%. Given the following drugs in a urine specimen: Cocaine alkaloid Secobarbital (a derivative of barbituric acid) Carisoprodol (a neutral drug) Devise an analytical flow chart that will be used to separate these substances from a urine specimen. The separation will be liquid extraction methods. Choose appropriate solvents and reagents based on the properties of the materials to be separated.
- At the beginning of a fractional distillation, the temperature of the vapor at the top of the fractionating column will correspond with ___________. the approximate boiling point of the liquid in the vapor phase the approximate boiling point of the liquid in the round bottom flask the approximate boiling point of the mixture the liquid with the highest boiling point3. The melting point of salicylic acid is higher than that of acetylsalicylic acid. Explain why this is with reference to their functional groups. bibs pilvolle to-ces icon 4. Tylenol also is an analgesic often taken by people allergic to aspirin. The active ingredient is acetaminophen. sulsV HO- 10 ONE NH H3C bis blas pily Would acetaminophen give a positive phenol test? (Y/N). bbs selyde A\8 Does this compound contain the ester functional group? If not, what functional group(s) is/are present? BenzerWhat is the % friability of Paracetamol 500 mg / tab if the initial weight is 7g & after the friability test the acquired final weight is 6.85 grams?