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24 solutions


Q. A student prepares the solution A2 according to the following procedure: Transfer 10.0 mL of 8.00x10-5 M A-1 solution to a dry 50.0 mL volumetric flask. Then fill the volumetric flask to the fill mark with solution A. What is the concentration of A-2 solution?

Solved • Jul 30, 2019


Q. If you were provided with a .200 M FeSCN2+ solution. How many mL of FeSCN2+ are needed to make a 475 mL of a .038 M FeSCN2+ solution?

Solved • Jul 29, 2019


Q. A concentrated HCl solution is 12.0 M. Write directions for preparing 500.0 ml of 1.00 M HCl by diluting the concentrated acid.

Solved • Jul 12, 2019


Q. A chemist performs a stepwise dilution of a 2.70 M HCI solution. At each step, he mixes 40 mL of the solution from the previous step with 60 mL distilled water. What will happen to the concentration of HCI in the solutions as the dilution proceeds? It will increase. It will decrease. It will remain constant.

Solved • Jul 8, 2019


Q. Determine the concentration of a 1.00 M solution of sodium chloride (NaCI) after the following changes occ

Solved • Jul 8, 2019


Q. What volume (in mL) of 0.0887 M MgF2 solution is needed to make 275.0 mL of 0.0224 M MgF2 solution?

Solved • Jun 27, 2019


Q. You have 250 ml of a 4 M NaCl stock solution. What volumes of stock and distilled water must you add together to create 2 ml of a 500 mM working solution?

Solved • Jun 25, 2019