A chemist prepares a solution of zinc oxalate (ZnC₂04) by measuring out 0.0029 µmol of zinc oxalate 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 zinc oxalate solution. Be sure your answer has the correct number of significant digits.

A chemist prepares a solution of zinc oxalate (ZnC₂04) by measuring out 0.0029 µmol of zinc oxalate 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 zinc oxalate solution. Be sure your answer has the correct number of significant digits.

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter1: Introduction To Chemistry

Section: Chapter Questions

Problem 1.87PAE: 1.87 A solution of ethanol in water has a volume of 54.2 mL and a mass of 49.6 g. what information...

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A chemist prepares a solution of silver(I) nitrate AgNO3 by measuring out 6.4102 x 10^2 μmol of silver(I) nitrate 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 silver(I) nitrate solution. Round your answer to 2 significant digits.
A chemist adds 925.0mL of a /0.00469gL copper(II) fluoride CuF2 solution to a flask.Calculate the mass in milligrams of copper(II) fluoride the chemist has added to the flask. Round your answer to 3 significant digits.
A chemist prepares a solution of mercury(I) chloride (Hg2Cl2) by measuring out 0.000221μmol of mercury(I) chloride into a 300. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in μmol/L of the chemist's mercury(I) chloride solution. Round your answer to 3 significant digits.
A chemist must prepare 625.mL of 149.μM aqueous magnesium fluoride MgF2 working solution. He'll do this by pouring out some 0.00179M 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. Be sure your answer has the correct number of significant digits.
How many grams of iron ammonium sulfate hexahydrate (Fe(NH4)2(SO4)2*6H20; 392.14 g/mol ) must be dissolved in a 250.0 mL volumetric flask to make a solution that has a Fe2 + concentration of 5.36x10 - 3 M? Be sure to enter you answer with the correct number of significant figures for the precision needed in the concentration.
A chemistry student weighs out 0.152g of phosphoric acid H3PO4 , a triprotic acid, into a 250.mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.2000M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Be sure your answer has the correct number of significant digits.
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 must prepare 300.mL of 2.00M aqueous silver perchlorate AgClO4 working solution. He'll do this by pouring out some 5.62molL aqueous silver perchlorate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in mL of the silver perchlorate stock solution that the chemist should pour out. Round your answer to 3 significant digits.
A chemistry student weighs out 0.160 g of sulfurous acid (H2SO3), a diprotic acid, into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1600M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Be sure your answer has the correct number of significant digits.
A chemistry student weighs out 0.160g of sulfurous acid H2SO3, a diprotic acid, into a 250.mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1600M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the final equivalence point. Be sure your answer has the correct number of significant digits.
A chemist prepares a solution of magnesium fluoride MgF2 by measuring out 0.0042μmol of magnesium fluoride into a 450.mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in /μmolL of the chemist's magnesium fluoride solution. Be sure your answer has the correct number of significant digits.
A 10.00 mL solution of a certain food dye has a concentration of 1.47 g /L. What is the total mass of food dye in the solution? Report your answer with the correct number of significant figures.

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