A pipet is used to transfer 5.00 mL of a 1.25 M stock solution in flask "S" to a 25.00-mL volumetric flask "B," which is then diluted with DI H,0 to the calibration mark. The solution is thoroughly mixed. Next, 2.00 mL of the solution in volumetric flask "A" is transferred by pipet to a 50.00-mL volumetric flask "B" and then diluted with DI H,0 to the calibration mark. Calculate the molarity of the solution in vol- umetric flask “B."

A pipet is used to transfer 5.00 mL of a 1.25 M stock solution in flask "S" to a 25.00-mL volumetric flask "B," which is then diluted with DI H,0 to the calibration mark. The solution is thoroughly mixed. Next, 2.00 mL of the solution in volumetric flask "A" is transferred by pipet to a 50.00-mL volumetric flask "B" and then diluted with DI H,0 to the calibration mark. Calculate the molarity of the solution in vol- umetric flask “B."

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

y D a -h 14. The unknown tablet is prepared for analysis in two steps. The tablet is crushed into a powder and then dissolved into a 250 mL volumetric flask with dilute acetic acid. A diluted powder solution is prepared by transferring 25.00 mL of the original powder solution into a 50 mL volumetric flask and diluting to volume with dilute acetic acid. Then 1.00 mL of the diluted powder solution is added to each of the standard addition flasks; each flask has a total volume of 10.00 mL. The unknown's riboflavin concentration in the standard addition solutions is determined to be 1.41 ppm. What is the riboflavin concentration (ppm) in the unknown powder solution? 2.82 21.2 14.1 28.2
A reaction is made up in the following way: 16 mL of 4.3 M acetone + 16 mL of 1.1 M HCI + 16 mL of 0.0058 M I2 + 14 mL of water. What was the inital concentration of I2 in the reaction mixture? Express your answer as a decimal number (no exponents). Please include proper (abbreviated) units.
1 of 4 Watch the video that shows using the dilution method to make a solution of known concentration. Note that while the video shows the use of a beaker, in the lab we typically use a volumetric flask to make the diluted solution. The stock solution of KMNO, has a concentration of 2.6 x 10ª M. The pipette has a volume of 10.0 mL. What is the amount of KMNO. delivered to the solution, in moles? mol Submit When using the dilution method to prepare a solution of known concentration, remember that the total amount of solute is the same in both the measured volume of the more concentrated stock solution and in the dilute solution created. This means we can use a simple ennation (Emation 4 2) to calculate the volume or concentration of either the stock solution or the more dilute solution Fauation 4 2 is stv hulu W
1. A students transfers 0.75 millimoles (mM) of baking sode (NaHCO3) in 400 mL of water, has the solution mixed so that the mineral dissolved completely and then fills more water in the volumetric flask until it reads 1.00 liter. Calculate the concentration of baking soda in the solution and express it in (a) mM/L; (b) g/L; (c) mg/L; (d) meq/L; (e) Molarity of solution; (f) Normality of solution; and (g) mg/L as CaCO.
A stock solution of potassium permanganate (KMnO4) was prepared by dissolving 17.1 g KMnO4 with DI H2Oin a 100.00-mL volumetric flask and diluting to the calibration mark. Determine the molarity of the solution.
A stock solution of potassium permanganate (KMn04) was prepared by dissolving 13.0g KMn04 with DI H20 in a 100.00-ml volumetric flask and diluting to the calibration mark. Determine the molarity of the solution
13. A series of dilute NaCl solutions are prepared starting with an initial stock solution of 0.100 M NaCl. Solution A is prepared by pipeting 10 mL of the stock solution into a 250-mL volumetric flask and diluting to volume. Solution B is prepared by pipeting 25 mL of solution A into a 100-mL volumetric flask and diluting to volume. Solution C is prepared by pipeting 20 mL of solution B into 500-mL volumetric flask and diluting to volume. What is the molar concentratio of NaCl in solutions A, B and C?
3. The following reactions happen simultaneously when HCl is added to a mixture of Mg(OH)2 and MgCO3: Mg(OH)2 + 2HC1 → MgCl₂ + 2H₂O MgCO3 + 2HCl → MgCl₂ + H₂O + CO₂ What volume (in mL) of 37 wt.% HCl solution (density = 1.2 g/mL) is needed to completely react a 25-g mixture of 35.2% MgCO3 and 64.8% Mg(OH)₂ by weight?
Write a complete and net ionic equation
50.020 g sucrose were used to prepare 300.0 mL of solution (sp. gr. = 1.17). What is the % by mass of sucrose in the solution?
Calculate the each initial CONCENTRATION for Pb(NO3)2 and KI before filling-out this chart. (Refer t Steps 1 and 2 of the procedure. Use the formula for Molarity to calculate the concentration of each salt after preparing the solution from the solid crystals dissolved in 100 mL of water. Do this for Lead (II) Nitrate and KI separately. Then use the dilution formula (starting with the initial concentration) for EACH beaker – each will have a the same total volume, but different volume of each solution added for each beaker. In short, FOR EACH BEAKER, multiple the concentration for Pb(NO3)2 with the concentration of KI.
Three aqueous solutions are mixed, 1.0 M (NH4)2SO4, 1.0 M Sr(OH)2 and 1.0 M CoCl3. The two precipitates are ____ and ____.