Calculating molárity ušing sóluté mcles A chemist prepares a solution of potassium permanganate (KMNO.) by measuring out 15.2 umol of potassium permanganate into a 350. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's potassium permanganate solution. Round your answer to 3 significant digits.

A chemist prepares a solution of aluminum chloride (AlCl,) by weighing out 7.327 g of aluminum chloride into a 250. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in g/dL of the chemist's aluminum chloride solution. Be sure your answer has the correct number of significant digits.

Water is added to 25.0 mL of a 0.716 M KNO3 solution until the volume of the solution is exactly 500.0 mL. What is the concentration of the final solution? Round your answer to 3 significant digits. M x10 X

A chemist prepares a solution of sodium carbonate (Na, CO,) by measuring out 101. g of sodium carbonate into a 450. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's sodium carbonate solution. Be sure your answer has the correct number of significant digits. I mol/L

Dilution A chemist makes 610. mL of copper(II) fluoride (CuF,) working solution by adding distilled water to 270. mL of a 0.00449 M stock solution of copper(II) fluoride in water. Calculate the concentration of the chemist's working solution. Round your answer to 3 significant digits. OM x10 ?

A chemist must prepare 725.mL of 793.μM aqueous magnesium fluoride (MgF2) working solution. He'll do this by pouring out some 0.00148M aqueous magnesium fluoride stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in mL of the magnesium fluoride stock solution that the chemist should pour out. Round your answer to 3 significant digits.

A chemist prepares a solution of iron(III) bromide (FeBr3) by weighing out 17.78 g of iron(III) bromide into a 50. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in g/dL of the chemist's iron(III) bromide solution. Be sure your answer has the correct number of significant digits.

A chemist prepares a solution of potassium dichromate (K,Cr,O,) by measuring out 35. g of potassium dichromate into a 300. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's potassium dichromate solution. Round your answer to 2 significant digits. alo | mol/L

A chemist prepares a solution of sodium thiosulfate Na2S2O3 by measuring out 147.g of sodium thiosulfate into a 250.mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in /molL of the chemist's sodium thiosulfate solution. Round your answer to 3 significant digits.

A chemist prepares a solution of potassium dichromate (K2Cr2O7) by measuring out 19.4g of potassium dichromate into a 250.mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's potassium dichromate solution. Round your answer to 3 significant digits.