Homework Answers
in last case no dilution is
done and the concentration will come out as our original stock
solution concentration, thus we have cross checked our
calculations.
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2. Calculate the concentrations of solutions 1-7 from the procedure step 2. Show one sample calculation....
5. In this experiment, you will prepare a standard solution for a calibration curve for the...
5. In this experiment, you will prepare a standard solution for a calibration curve for the formation of FeSCN2 complex by reaction different volumes of 0.2 M Fe(NO,), and 0.002 M NaSCN. You will use 0.05M HNO, for all dilutions. Using the table, Calculate the equilibrium concentrations of FeSCN2 Vol of Fe Vol of SCN 0.1 M HNO Equilibrium concentration Fe[SCN]2' (mL) (mL.) (mL) 10.00 0.00 10.00 10.00 1.00 9.00 10.00 2.00 8.00 10.00 3.00 7.00 10.00 4.00 6.00 10.00...
Could you please help me with calculating the initial concentrations, and please tell me if I...
Could you please help me with calculating the initial
concentrations, and please tell me if I did table 4 correctly. I
would like to see one or two calculations for the second bullet so
I can figure out how to do them all. Thank you!
13. Use a 3.00 mL pipette to deliver 0.0020 M Fe(NO3)3 solution and burettes to deliver the required volumes of KSCN solution and DI water into clean and dry test tubes. Note that this set...
1. Using the volumes and concentrations given in Table 13-2 of the instructions, calculate the diluted...
1. Using the volumes and concentrations given in Table 13-2 of the instructions, calculate the diluted concentration of the hydroxide ion at time zero, (OH), for each of the 3 solutions. You must take into account the total volume after all solutions have been added together. Show your work here and record the values on your Report Sheet in Table 13-4 as well. (Hint: CV = CV, may be applied here). (1.0 point] Solution Calculated [OH'] Table 13-2: Preparation of...
EXERCISING ESSENTIAL STATISTICS 1. The department of transportation in a state government range for each office....
EXERCISING ESSENTIAL STATISTICS 1. The department of transportation in a state government range for each office. Discuss the meaning of each of these performance measures for the offices. has four vehicle registration offices in a metropolitan area. The department recently conducted a series of studies to determine the number of mistakes made in issuing or renewing driver's licenses (an outcome measure). Twelve tests were conducted in each of these four offices, and the results are shown in Tablew9 Table w9.1...
4) An unknown concentration of NiSO4 solution is to be determined by colorimetric analysis using a...
4) An unknown concentration of NiSO4 solution is to be determined by colorimetric analysis using a spectrophotometer. The standard solutions are prepared as the following: 2.00 mL (the same procedures for 3.0 mL, 4.00 mL, 6.00 mL, 7.00 mL) of the stock solution of 1.00 M NİSO4 is transferred into a 25-mL volumen flask and diluted by adding distilled water to the mark line. The spectrophotometer is calibrated at the wavelength of 635 nm. The absorbance (A) readings and the...
please do 1 through 4. Thank you. 0 1. Fe 1.SCN Procedure B: 1. Prepare ICE...
please do 1 through 4. Thank you.
0 1. Fe 1.SCN Procedure B: 1. Prepare ICE tables for beakers 2 - 6 using the example below as a guideline (you will have 5 different ICE tables). Table 3. Sample "ICE" table. Fe(aq)*3 + SCN(aq) = FeSCN2 Initial: **M calculated **M calculated using your Table 2 using your Table 2 volumes volumes Change: - 1x - 1x Equilibrium: M 1x 1x = concentration calculated from Procedure A slope-intercept equation +1x M...
3. Experimental Procedure, Part A.1. For preparing a set of standard solutions of FeNCS, the equilibrium...
3. Experimental Procedure, Part A.1. For preparing a set of standard solutions of FeNCS, the equilibrium molar con- centration of FeNCS is assumed to equal the initial molar concentration of the SCN in the reaction mixture. Why is this assumption valid? A. A Set of Standard Solutions to Establish a The set of standard solutions is used to determine the absorbance of known molar con- centrations of FeNCS2. A plot of the data, known as a calibration curve, is used...
QUESTION: Using the volumes and concentrations given in Table 13-2 of the instructions, calculate the diluted...
QUESTION: Using the volumes and concentrations given in Table 13-2 of the instructions, calculate the diluted concentration of the hydroxide ion at time zero, [OHlo, for each of the 3 solutions. You must take into account the total volume after all solutions have been added together. Show your work here and record the values on your Report Sheet in Table 13-4 as well. (Hint: CV C2V2 may be applied here). [1.0 point] 1. Solution Calculated [OH] Table 13-2: Preparation of...
Laboratory goggles must be worn! A) Preparation of Solutions from Concentrated Solution In this part the...
Laboratory goggles must be worn! A) Preparation of Solutions from Concentrated Solution In this part the experiment you will prepare several dilute solutions from the more concentrated cobalt nitrate solution 1. Read the label on the provided cobalt nitrate solution and record the molarity accurately. su-olu 563/ 316.603:48 صلاح 2. 3. 4. Molarity of Ca(NO3)2 solution 182.95 g/mol Obtain a 25-ml buret. Examine its markings, the line that spans the entire circumference occur for each milliliter. The smaller lines indicate...
Procedure 1. Label four 50.0 mL volumetric flasks.)! through 4 2. Using a buret, add 10.00 ml of ...
Procedure 1. Label four 50.0 mL volumetric flasks.)! through 4 2. Using a buret, add 10.00 ml of 2.00x10'MFeNO)D solution to each of the flasks 3. Using a buret, add 1.00 mL. 2.00 mL, 3.00 mL, and 4.00 mL of 2.00x 10 MKSCN 4. Fill each flask to the mark with 0.10 M HNO, solution. Stopper each flask and invert 5. Measure the absorbance of each solution at a wavelength of 447 nm (the absorbance reterred to in step 1...
5. In this experiment, you will prepare a standard solution for a calibration curve for the formation of FeSCN2 complex by reaction different volumes of 0.2 M Fe(NO,), and 0.002 M NaSCN. You will use 0.05M HNO, for all dilutions. Using the table, Calculate the equilibrium concentrations of FeSCN2 Vol of Fe Vol of SCN 0.1 M HNO Equilibrium concentration Fe[SCN]2' (mL) (mL.) (mL) 10.00 0.00 10.00 10.00 1.00 9.00 10.00 2.00 8.00 10.00 3.00 7.00 10.00 4.00 6.00 10.00...
Could you please help me with calculating the initial
concentrations, and please tell me if I did table 4 correctly. I
would like to see one or two calculations for the second bullet so
I can figure out how to do them all. Thank you!
13. Use a 3.00 mL pipette to deliver 0.0020 M Fe(NO3)3 solution and burettes to deliver the required volumes of KSCN solution and DI water into clean and dry test tubes. Note that this set...
1. Using the volumes and concentrations given in Table 13-2 of the instructions, calculate the diluted concentration of the hydroxide ion at time zero, (OH), for each of the 3 solutions. You must take into account the total volume after all solutions have been added together. Show your work here and record the values on your Report Sheet in Table 13-4 as well. (Hint: CV = CV, may be applied here). (1.0 point] Solution Calculated [OH'] Table 13-2: Preparation of...
EXERCISING ESSENTIAL STATISTICS 1. The department of transportation in a state government range for each office. Discuss the meaning of each of these performance measures for the offices. has four vehicle registration offices in a metropolitan area. The department recently conducted a series of studies to determine the number of mistakes made in issuing or renewing driver's licenses (an outcome measure). Twelve tests were conducted in each of these four offices, and the results are shown in Tablew9 Table w9.1...
4) An unknown concentration of NiSO4 solution is to be determined by colorimetric analysis using a spectrophotometer. The standard solutions are prepared as the following: 2.00 mL (the same procedures for 3.0 mL, 4.00 mL, 6.00 mL, 7.00 mL) of the stock solution of 1.00 M NİSO4 is transferred into a 25-mL volumen flask and diluted by adding distilled water to the mark line. The spectrophotometer is calibrated at the wavelength of 635 nm. The absorbance (A) readings and the...
please do 1 through 4. Thank you.
0 1. Fe 1.SCN Procedure B: 1. Prepare ICE tables for beakers 2 - 6 using the example below as a guideline (you will have 5 different ICE tables). Table 3. Sample "ICE" table. Fe(aq)*3 + SCN(aq) = FeSCN2 Initial: **M calculated **M calculated using your Table 2 using your Table 2 volumes volumes Change: - 1x - 1x Equilibrium: M 1x 1x = concentration calculated from Procedure A slope-intercept equation +1x M...
3. Experimental Procedure, Part A.1. For preparing a set of standard solutions of FeNCS, the equilibrium molar con- centration of FeNCS is assumed to equal the initial molar concentration of the SCN in the reaction mixture. Why is this assumption valid? A. A Set of Standard Solutions to Establish a The set of standard solutions is used to determine the absorbance of known molar con- centrations of FeNCS2. A plot of the data, known as a calibration curve, is used...
QUESTION: Using the volumes and concentrations given in Table 13-2 of the instructions, calculate the diluted concentration of the hydroxide ion at time zero, [OHlo, for each of the 3 solutions. You must take into account the total volume after all solutions have been added together. Show your work here and record the values on your Report Sheet in Table 13-4 as well. (Hint: CV C2V2 may be applied here). [1.0 point] 1. Solution Calculated [OH] Table 13-2: Preparation of...
Laboratory goggles must be worn! A) Preparation of Solutions from Concentrated Solution In this part the experiment you will prepare several dilute solutions from the more concentrated cobalt nitrate solution 1. Read the label on the provided cobalt nitrate solution and record the molarity accurately. su-olu 563/ 316.603:48 صلاح 2. 3. 4. Molarity of Ca(NO3)2 solution 182.95 g/mol Obtain a 25-ml buret. Examine its markings, the line that spans the entire circumference occur for each milliliter. The smaller lines indicate...
Procedure 1. Label four 50.0 mL volumetric flasks.)! through 4 2. Using a buret, add 10.00 ml of 2.00x10'MFeNO)D solution to each of the flasks 3. Using a buret, add 1.00 mL. 2.00 mL, 3.00 mL, and 4.00 mL of 2.00x 10 MKSCN 4. Fill each flask to the mark with 0.10 M HNO, solution. Stopper each flask and invert 5. Measure the absorbance of each solution at a wavelength of 447 nm (the absorbance reterred to in step 1...
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