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- 51. A concentrated perchloric acid solution is 65.8% HClO4 by mass and its density is 1.68 g mL−1. What volume (in litres) of the concentrated perchloric acid solution is needed to make 1.81 L of 2.62 mol L−1 HClO4(aq)?A chemist prepares a solution of calcium sulfate (CaSO4) by measuring out 0.0770 µmol of calcium sulfate into a 450. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in umol/L of the chemist's calcium sulfate solution. Be sure your answer has the correct number of significant digits. µ mol x10In the laboratory you dissolve 12.2 g of magnesium iodide in a volumetric flask and add water to a total volume of 375 . mL. What is the molarity of the solution?
- In the laboratory you dissolve 22.9g of magnesium iodidein a volumetric flask and add water to a total volume of 125. mL.What is the molarity of the solution?In the laboratory you dissolve 16.6 g of magnesium chloride in a volumetric flask and add water to a total volume of 500 . mL.What is the molarity of the solution?A) Calculate the molarity 12.21 mg KI in 107.6 mL of solution Express your answer using four significant figures. B) A chemist wants to make 6.0 L of a 0.310 MCaCl2 solution. What mass of CaCl2 (in g) should the chemist use? Express your answer in grams using two significant figures.
- 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 silver(I) nitrate (AgNO,) by measuring out 245. µmol of silver(I) nitrate into a 400. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in umol/L of the chemist's silver(I) nitrate solution. Be sure your answer has the correct number of significant digits. u mol x10A chemist must prepare 625. mL of 14.0 μM aqueous mercury(II) iodide (Hg1₂) working solution. He'll do this by pouring out some 0.0000292 M aqueous mercury(II) iodide stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in mL of the mercury(II) iodide stock solution that the chemist should pour out. Round your answer to 3 significant digits. mL 0