Determination of the true concentration (ppm Fe) in a water sample using the iron-phenanthroline method. Dilution factor was not taken into account. ExBlank 1ET Blank 1 Add your answer
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- You have been asked to make a guess as to the type of alkalinity present for the water samples listed below (hydroxide, carbonate, and/or bicarbonate) in each of the samples: (Use all the assumptions that we used in lab) Species present total ml to titrate all of the alkalinity due to the carbonate in the original solution A: Vp = 0 ml; Vmo = 0 ml B: Vp = 10 ml; Vmo = 10 ml C: Vp = 15 ml; Vmo = 5 ml D: Vp = 5 ml, Vmo = 10 mlPlease answer as soon as possible. Thank you! A 10.000-g cocoa powder sample was dissolved in concentrated acid and then diluted to 100.00 mL using distilled water. The solution was found to contain 5.45 uM Fe. Calculate concentration of Fe (MM: 55.845) in the cocoa powder sample in parts-per-million (ppm) (weight by volume).Determine a procedure to accurately create a 1.5•10^-6 mg Fe/mL solution using a 0.0500 mg Fe/mL standard solution and only having access to 100.0 mL volumetric flasks and 1.00, 2.00, 3.00, 4.00, 5.00 and 10.00 mL volumetric pipets. (You may have it make more than one solution by dilution to accomplish this)
- In the simulation, select the custom liquid from the dropdown list. The beaker will be filled to the 1.00 LL mark with the solution. Set the pHpH to 8.55 by entering the value in the text box provided above the pHpH scale in the panel called "pHpH." Once you adjust the pHpH, note the corresponding OH−OH− ion concentration in mol L−1mol L−1 as given in the graph on the right side of the simulation. Make sure to click the option "Concentration (mol L−1mol L−1)" under the “Water components” panel. Click on the Logarithmic scale below the graph.Find the pOHpOH of the solution.Express your answer numerically to two decimal places.A student, performing the same experiment as you, recorded the following information. The original solution was diluted by a factor of 5.Calculate the volume of NaOH used to reach the equivalence point. Volume of diluted vinegar sample (mL) 25.00 Molarity of NaOH 0.0900 Initial buret reading (mL) 16.50 Final buret reading (mL) 38.00 Volume of NaOHFor the Experiment, 10 mL of a DIVA Sciences’ White Vinegar sample will be dispensed and diluted to 100 mL in a 100-mL Volumetric Flask. Determine the range of initial concentrations. Diluted DIVA Sciences’ White Vinegar (5%) Solution = ____________________ M Diluted DIVA Sciences’ White Vinegar (8%) Solution = ____________________ M
- Using gravimetry analysis, explain in 3-4 how is the process of testing the purity of the squash soupHow to prepare these solutions? 250.0 mL 0.125 M stock Na2S2O3 solution from Na2S2O3·5H2O crystals 250 mL 0.10 M NaOHNOTE: Use the 1.0 M NaOH prepared250.0 mL standard 2500 ppm Cu(II) stock solutiona. Weigh and dissolve appropriate amount of Cu(NO3)2·5H2O crystals in enough distilled water.Please help me find the concentration of each standard solution in the v-flask, and prepare a curve. The solution was diluted with ddH2O.
- PROCEDURES (PART A) Prepare the following test solutions Approximately 0.5 M KOH by diluting 20 mL of 6 M KOH into the appropriate volume of distilled water. You may use a 100-mL graduated cylinder repeatedly to reach your final volume. Show your calculations here: What should be the final volume? ______ (Store this solution in the provided bottle; label the bottle with your name and “0.5M KOH”) Approximately 0.5 M HCl by diluting 5 mL of 6 M HCl into the appropriate volume of distilled water. You may use a 100-mL graduated cylinder to measure your final volume. It doesn’t need to be exact. Show your calculations here: What should be the final volume? ______ Put enough solid NaCl to cover the bottom curve of a large test tube. Dissolve in about 15 mL of distilled water. Litmus paper test: Place about 2 mL of each one of the three test solutions made in step 1 into separate small test tubes. Use a glass stirring rod to just touch the surface of one of the solutions. Touch…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?You have to make 50 mL of 0.05M HCl from a 10M HCl stock solution, but the only measuring devices available are 100mL graduated cylinders and 10mL serological pipets. How could you accurately make the dilute HCl solution (clearly explain)?