A chemist prepares a solution of silver(II) oxide (AgO) by measuring out 0.00926 µmol of silver(II) oxide into a 500. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's silver(II) oxide solution. Be sure your answer has the correct number of significant digits.

A chemist prepares a solution of magnesium fluoride (MgF₂) by measuring out 0.00648 µmol of magnesium fluoride into a 500. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in µmol/L of the chemist's magnesium fluoride solution. Round your answer to 3 significant digits. μ mol L x10 X Ś

A chemist adds 145.0 mL of a 0.00260 mol/L calcium sulfate (CaSO.) solution to a reaction flask. Calculate the millimoles of calcium sulfate the chemist has added to the flask. Be sure your answer has the correct number of significant digits. |mmol x10 ?

A chemist adds  75.0mL  of a  /3.20gdL  potassium dichromate  K2Cr2O7  solution to a flask.Calculate the mass in grams of potassium dichromate the chemist has added to the flask. Be sure your answer has the correct number of significant digits.

A chemist prepares a solution of nickel (II) chloride (NiCl2) by measuring out 160. umol of nickel (II) chloride 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 nickel (II) chloride solution. Round your answer to 3 significant digits.

A chemist adds 360.0 mL of a 0.816 mol/L potassium iodide (KI) solution to a reaction flask. Calculate the millimoles of potassium iodide the chemist has added to the flask. Be sure your answer has the correct number of significant digits. mmol x10

A chemist prepares a solution of barium chlorate (Ba(ClO3)2) by measuring out 9.86 g of barium chlorate into a 400. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's barium chlorate solution. Be sure your answer has the correct number of significant digits.

A geochemist measures the concentration of salt dissolved in Lake Parsons and finds a concentration of 69.32 g.L The geochemist also measures the concentration of salt in several nearby non-isolated lakes, and finds an average concentration of 5.02 g⋅L¯¹. Assuming the salt concentration in Lake Parsons before it became isolated was equal to the average salt concentration in nearby non-isolated lakes, calculate the percentage of Lake Parsons which has evaporated since it became isolated. Be sure your answer has the correct number of significant digits.

A chemist prepares a solution of aluminum sulfate (Al₂(SO4)3) by measuring out 36.2 g of aluminum sulfate into a 150. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's aluminum sulfate solution. Round your answer to 3 significant digits. mol/L 0 x10 X

A chemist adds 210.0mL of a 0.248 mol/L barium chlorate (Ba(ClO3)2) solution to a reaction flask. Calculate the millimoles of barium chlorate the chemist has added to the flask. Be sure your answer has the correct number of significant digits.   mmol