As a Pharmacist in a manufacturing firm, you are asked to prepare a 2.5L Simple syrup. To continue in coming up with 2.5L Simple Syrup , you need to add distilled water until 2,500mL white heating it on a hot plate. O True False
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- You need 300. mL of 0.500-M K2Cr2O7. Which method is best to prepare this solution? Explain your choice. (a) Dilute 250. mL of 0.600-M K2Cr2O7 to 300. mL. (b) Add 50.0 mL water to 250. mL of 0.250-M K2Cr2O7. (c) Dilute 125 mL of 1.00-M K2Cr2O7 to 300. mL. (d) Add 30.0 mL of 1.50-M K2Cr2O7 to 270. mL of water.Six 50.0 ml volumetric flask 1 through 6 are labeled. 10.00 ml of 2.00 x 10-1 M Fe(NO3)3 solution was then pipet into each volumetric flask. A 1.00,2.00,3.00,4.00 and 5.00ml of 2.00 x 10-3M NaSCN solution was then pipetted to flask 2 through 6 respectively. A sufficient amount of 0.10 M nitric acid was then added to each flask to make each a total volume of 50.00ml. Hint M1V1=M2V2 a)what would be the concentration of Fe(NO3)3 in 0.10M HNO3? b)what would be the concentration of NaSCN in 0.10M HNO3?Dissolve 0.25g NaCi, 0.20g NaHCO3, 0.35g KCI, and 1.5g of glucose in 100 ml distilled water using a 250 mL capacity beaker. Use the formula to create a 60 mL ORS. Based on the given procedure, calculate the total amount of potassium in the prepared solution. (MW: Na: 23, K: 39, CI: 35, H: 1, C: 12, O: 16) 47.30 mmol/L 66.91 mmol/L O 83.33 mmol/L O 71.11 mmol/L O 23.81 mmol/L O 90.40 mmol/L
- Reactions CuCl2(aq) + H20(1) + Na2SO3(aq) → NazSO4(aq) + 2HCI(aq) + 2CuCI(s) SO3? (aq) + 2H*(aq) → SO2(g) + H20(1) CuCl2(aq) + SO2(g) + 2H2O(1) → H2SO4(aq) + 2CUCI(s) + 2HCI(aq)The followings methods are useful to induce crystallization EXCEPT adding a small crystal of the desired compound, called a seed crystal, to the solution adding anhydrous potassium carbonate to the solution and cooling it in an ice bath scratching the inner wall of the Erlenmeyer flask with a glass stirring rod reheating the solution to boiling to boil off some of the solvent, and then allow the solution to cool to room temperature again to effect crystallization148. Addition of 50.00 mL of 2.238 m H2SO4 (solution density = 1.1243 g/mL) to 50.00 mL of 2.238 M BaCl2 gives a white precipitate. (a) What is the mass of the precipitate in grams? (b) If you filter the mixture and add more H2SO4 solution to the filtrate, would you obtain more precipitate? Explain.
- Dissolve 0.25g NaClI, 0.20g NaHCO3. 0.35g KCI, and 1.5g of glucose in 100 ml distilled water using a 250 mL capacity beaker. Use the formula to create a 60 mL ORS. Based on the given procedure, calculate the total amount of glucose in the prepared solution. (MW: Na: 23, K: 39, CI: 35, H: 1, C: 12, 0: 16) O 83.33 mmol/L 66.91 mmol/L 90.40 mmol/L 71.11 mmol/L O 23.81 mmol/L O 47.30 mmol/LSix 50.0 ml volumetric flask 1-6 are labeled. 10.00 ml of 2.00 x 101 M Fe(NO3)3 solution was then pipet into each volumetric flask. A 1.00,2.00,3.00,4.00 and 5.00ml of 2.00 x 10-3M NaSCN solution was then pipetted to flask 2 through 6 respectively. A sufficient 0.10 M nitric acid was then added to each flask to make them total volume of 50.00ml. 1.a)Calculate the final Fe(NO3)3 concentrations for each. 1.b)Also how would you find the initial concentration of SCN- for each flask? Please show calculations to solutions.ThanksA phamacist reconstituted a vial of 750 mg Cefuroxime Sodium Powder for Injection with 6mL of sterile water for injection. The reconstituted solution was dark amber-colored solution. The package insert states that solution colors range from clear to yellow depending on concentration, diluent, and storage conditions. The pharmacist was then hesitant to give the patient the solution due to its unusual dark color. Five portions were taken from a batch of cefuroxime sodium. Prior to testing in the instrument, each part was subjected to one of the following conditions: Conditions Specifications Temperature Portion 1: 8°C ± 2°C Portion 2: 30°C ± 2°C Portion 3: 40°C ± 2°C Light Portion 4: Kept in the dark Portion 5: Exposed to direct sunlight a. Which form of the product – the powder for injection, the reconstituted product, or both – will you subject to the following conditions and why? b. Will you also expose the reference standard of cefuroxime sodium to the same…
- How do you prepare 250 ml 0.05 M CuCl2 solution from 0.1 M CuCl2 stock solution? Lütfen birini seçin: a. By mixing 125 ml 0.1 M stock solution with 125 ml water b. By transferring 125 ml 0.1 M stock solution to 250 ml volumetric flask and making up the mark with water c. By transferring 125 ml 0.1 M stock solution 500 ml volumetric flask and making up the mark with water d. By transferring 250 ml 0.1 M stock solution to 1000 ml volumetric flask and making up the mark with waterGroup I Cations of 6 M HCI; centrifuge for ~1 minute. Decant the solution and add an additional one or two drops of 6 M HCI; if no additional precipitate forms, the precipitation is complete. If it was incomplete, centrifuge to obtain the additional solid; then decant the liquid, add 1 or 2 drops of 6 M HCI, and repeat the procedure until no precipitate forms. Discard the supernatant into the appropriate waste container or keep for later experiments if your instructor so indicates. Add 1.5 mL of cold deionized or distilled water to the precipitate to wash; agitate, centrifuge, and discard the water to the appropriate waste container. Repeat the wash procedure. The solid contains Pb2*, Ag*, and/or Hg22*. Step 2. Separation of Pb2*. Add 1 mL of boiling water to the solid from step 1. Agitate, centrifuge, and decant the liquid. Repeat the extraction, combining the supernatant. The liquid should contain Pb?* if any is present. Step 3. Testing for Pb2*. Add 2 or 3 drops of 0.2 M K2CRO4…You have a separatory funnel containing an immiscible mixture of 1-octanol (d = 0.824 g/mL) and aqueous NaOH. If you add the five compounds below and shake the funnel to mix, which compound(s) will be in which layer? LOH NH2 HO. A В C -OH D E A [ Choose ] Bottom Layer Тop Layer В TeHOuse jT [ Choose ] D [ Choose ) [ Choose ]