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- show the complete solution and write answers in 3 significant figures. DYE CALCULATED Rf Tartrazine (yellow #5) ? Sunset yellow (yellow #6) ? Allura red (red #40) ? Brilliant blue (blue #1) ? M&M's color COMPOSITION Orange ? Green ? Blue ? Brown ? CHROMATOGRAM BEFORE: (image 1) CHROMATOGRAM AFTER: (image 2)Chemistry Rx Cocaine HCl 1.5% (E = 0.16) Eucatropine HCl 1.5% (E = 0.18) Chlorobutanol 0.5% (E = 0.24) Make isotonic Disp: 30 mL a) How much sodium chloride should be added to make the above solution isotonic? b) If boric acid (E = 0.52) was used to make the solution isotonic how many grams should be used?MULTIPLE CHOICE: Choose the letter of the best answer Please answer all questions correctly 1. The standardization of volumetric solution does not require hydrochloric acid. A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E.All of the choices 2. In the standardization of its volumetric solution, the primary standard is dried to constant weight, which means drying shall be continued until two consecutive weighings do not differ by more than 0.50 mg. A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E.All of the choices 3. In the standardization of its volumetric solution, potassium iodide was added to A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E.All of the choices 4. Starch is the indicator of choice for these procedures because it forms intense blue coloration with the solution. A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E. C and D 5. In the standardization of its volumetric solution, the reaction needs to be…
- Indicate the appropriate protocol below to prepare the required solution. a) Solution 5 Preparation: Prepare: 10 mL of 23% mannitol From: solid mannitol Procedure: b) Solution 2 Preparation: Prepare: 0.5 liters of 0.01 mg/mL ascorbic acid From: solid ascorbic acid , MW = 176.1 g/mol Procedure: C) Solution 3 Preparation: Prepare: 1 liter of 150 mM Tris From: 1 Molar Tris stock solution Procedure:6 I- + BrO3- + 6 H+ ----- 3 I2 + Br- + 3 H2O Rate= k[I-]m[BrO3-]n[H+]p rate= (∆[I2])/(3*∆time) [I-] 0.010M [S2O3-2] 0.0010M H2O [BrO3-] 0.04M HCl 0.10M Starch Indicator (sec.) Volume, ml Volume, ml Volume, ml Volume, ml Volume, ml 1 10 10 20 10 10 1-3 drops 301.90 2 20 10 10 10 10 1-3 drops 213.28 3 10 10 10 20 10 1-3 drops 214.92 4 10 10 10 10 20 1-3 drops 86.45 Temperature of Reaction: _______20 C________ 1. Using the dilution equation (M1V1 = M2V2) calculate the concentration of the I-, BrO3- and the H+ (HCl) in the final mixture just prior to any reaction. 2. Calculate the rate for each experiment as explained in the background information. 3. Using the information above determine the rate law (m, n and p) for the reaction. Show all calculations/reasoning in your notebook. m_____________ n_________________ p…What is the concentration in units of grams of dye per liter of solution ,of the dilute dye solution that is produced as follows? transfer 19.53 ml of stick solution (6.10g/L) to a 200.0Ml volumetric flask and dilute to the 200 ml line with deionized water. Correct number of significant figs
- A sample is analyzed for chloride using the Volhard method. What is the percentage chloride as NaCl using the following data? Weight of sample: 303.0 mg AgNO3 used: 40.00 mL of 0.1234 M KSCN used: 12.20 mL of 0.0930 M1. Which of the following is the best option for transferring 20 mL of a solution? a.Use a 5mL serological pipette 4 times b. Use a 10 mL Mohr pipette twice c. Use a 20 mL Mohr pipette once d. Use a 10 mL volumetric pipette twice 2. Which glassware is NOT used in preparing a solution from a solid sample? a. Funnelb. Beakerc. Volumetric pipette1. What method of tonicity adjustment will be used in the preparation? * a. White-Vincent Method b. Sprowl's Method c. NaCl Equivalent Method d. Cryoscopic method 2. What is the working formula of the method used in Problem 1? a. V = W x E x 111.1 b. ((-0.52°C) - a ) ÷ b c. 0.9 - (% of drug x E) 3. How much NaCl (in grams) is needed to make 0.4% solution of chlorbutanol isotonic?
- 4. 3mg haldol IM is ordered. 2mL ampules aer available with 5mg/mL. How many mL will be administered?30 - How many mL of 3.50 M H2SO4 solution is needed to prepare 250 mL of 1.25 M H2SO4 solution? a) 26.4 B) 179.6 NS) 11.6 D) 18 TO) 89.3If 45.0 mL of solvent is added to 85.0 mL of an 80.0% solution, what would the new concentration be? Group of answer choices 80.0% 1.63% 61.5% 90.3% 52.3%