Calculated initial [dye] (M)
The question is to calculate the initial [dye] (M) for Soln 1-4.
Conc of Allura Red 1.05*10^-4 M
Conc of Bleach 5.04*10^-3 M
| Soln | Volume of Allura Red stock added (ml) | Volume of DI H20 added to Allura Red (ml) | Volume of bleach added (ml) |
| 1 | 5.00 | 15.00 | 20.00 |
| 2 | 10.00 | 10.00 | 20.00 |
| 3 | 15.00 | 5.00 | 20.00 |
| 4 | 20.00 | 0.00 | 20.00 |
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In the simulation below, you will be working with a 10.00 mL solution, which you will...
In the simulation below, you will be working with a 10.00 mL
solution, which you will make up of the dye and the bleach. You
will be using a 10 mL serological pipet to deliver the dye and a 1
mL syringe to deliver the bleach to a vial, which you will place
into the spectrophotometer. You will have to ensure that the
solution is mixed well throughout the experiment by means of a
magnetic stirrer. You are given a...
3. A 40.00 mL 0.100 M solution of HCN was slowly titrated with 0.200 M NaOH...
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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...
which is correct? please explain Identify the predominant reaction taking place in the solution at point...
which is correct? please explain
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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...
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Red food dye (FD&C Red 40, also known as allura red AC) has the formula C18H14N2Na2O8S2....
Red food dye (FD&C Red 40, also known as allura red AC) has the formula C18H14N2Na2O8S2. 1. What is the molar mass of FD&C Red 40? To make a solution you take 0.0097 g of FD&C Red 40. 2. How many moles of FD&C Red 40 are in your sample? You dissolve the sample of FD&C Red 40 in enough water to make 250.0 mL of solution. We call this the stock solution. 3. What is the concentration of the...
In the simulation below, you will be working with a 10.00 mL
solution, which you will make up of the dye and the bleach. You
will be using a 10 mL serological pipet to deliver the dye and a 1
mL syringe to deliver the bleach to a vial, which you will place
into the spectrophotometer. You will have to ensure that the
solution is mixed well throughout the experiment by means of a
magnetic stirrer. You are given a...
3. A 40.00 mL 0.100 M solution of HCN was slowly titrated with 0.200 M NaOH solution. Complete the following table and show your calculations in the space provided. Volume of NaOH added (mL) pH 0.00 5.00 10.00 15.00 20.00 25.00 Show your calculations for pH clearly and in steps.
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...
which is correct? please explain
Identify the predominant reaction taking place in the solution at point A, 0 mL NaOH added. Acetic Acid Titration Curve 14.00 13.00 12.00 11.00 10.00 9.00 7.00 6.00 5.00 4.00 3.00 2.00 1.00 0.00 0.00 25.00 30.00 35.00 5.00 10.00 15.00 20.00 Volume NaOH (mL) HC2H302(aq) + OH - (aq)=C2H302-(aq) + H2O(1) HC2H302(aq) + H20(1) = C2H302 (aq) + H30+(aq) o C2H302 (aq) + H2O(1) = HC2H302(aq) + OH- (aq)
Prelab 9: Due at the start of Lab 9 Name: Lab day Show all work and include units and sig figs where applicable. 1. To make solutions for the Beer's Law graph, you are provided with a 49.9 ppm Allura Red solution. You pipet 10.00 mL of this solution into a test tube and then you pipet 20.00 mL of deionized water into the same tube. After stirring, what is the Allura Red concentration of the new solution you've made?...
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20. Use the following information and following graph to calculate the mass of sodium chloride in the garlic salt sample ISE slope: -57.5 mV [KCI: 0.09685 M Volume of garlic salt solution: 300 mL Volume of solution used for measurement: 115 mL NaCI MW: 58.44 g/mol 1 6.00 5.00 4.00 3.00 V's=-23.8 mL 2.00 1.00 0.00 -30.00 Volume of Added KCI (ML) -10.00 0.00 10.00 -20.00 20.00 30.00
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