A chemist started with 49.38 mL of an aqueous glucose solution and added 63.11 mL of water followed by stirring. The resultant glucose concentration was 0.16 mol L-1. What was the concentration of glucose in the first solution (in mol L-1)?
A chemist started with 49.38 mL of an aqueous glucose solution and added 63.11 mL of...
A chemist started with a 0.64 mol L-1 aqueous glucose solution and added water followed by stirring to obtain a final total volume of 142.53 mL. The resultant glucose concentration was 0.42 mol L-1. What was the volume of the initial glucose solution (in mL)?
A chemist prepared an aqueous buffer containing both formic acid (HCOOH) and the formate anion. The volume of the buffer is 100 mL ; with [HCOOH] = 0.110 mol L-1 and [HCOO- ] = 0.101 mol L-1 . The pKa of HCOOH = 3.74. What is the pH of this buffer? Write down the balanced chemical equation that describes the reaction of this buffer when an HCl solution is added. c) What is the resultant pH of this solution after...
Stock glucose (C6H12O6) solution with concentration 50.0 mmol/L. 0.30 mL of such stock solution and added water to each vial to complete 10.0 ml. Final glucose concentrations in mg/dL?
mol A chemist must prepare 625. mL of 1.00M aqueous aluminum chloride (AICI,) working solution. He'll do this by pouring out some 1.98 - aqueous L aluminum chloride stock solution into a graduated cylinder and diluting it with distilled water Calculate the volume in mL of the aluminum chloride stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits. ? X
If 200. mL of water is added to 300. mL of an aqueous solution that is 0.64 M in potassium sulfate, what is the concentration of potassium ions in the final solution?
4.07 mL of an aqueous 0.466 M solution and 4.970 mL of water is added to a graduated cylinder. What is the concentration of the resulting solution? Enter your answer with at least 3 sig figs. Don't use scientific notation.
A chemist must prepare 700.mL of 2.00M aqueous sodium thiosulfate Na2S2O3 working solution. He'll do this by pouring out some 3.15mol/L aqueous sodium thiosulfate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in mL of the sodium thiosulfate stock solution that the chemist should pour out. Round your answer to 3 significant digits.
A chemist must prepare 700 mL of 340. mM aqueous iron(III) bromide (FeBr, working solution. He'll do this by pouring out some 0.951 mol aqueous iron(III) bromide stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in ml of the iron(III) bromide stock solution that the chemist should pour out. Round your answer to 3 significant digits. Tome
A chemist must prepare 450. mL of 5uM aqueous mercury(I) chloride working solution. He'll do this by pouring out some 5.29 umol/L aqueous mercury(I) chloride stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in of the mercury(I) chloride stock solution that the chemist should pour out. Round your answer to 3 significant digits
2. (4 points) A chemist must dilute 34.7 mL of 2.77M aqueous sodium chloride solution until the concentration falls to 2.00 M . He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in milliliters.