# Chemistry

A chemist must prepare 500 ml of 9.00uM aqueous mercury(II) iodide working solution. He'll do this by pouring out some 81.0 umol/L aqueous mercury(II) iodide stock solution into a graduated cylinder and diluting it with distilled water.
Calculate the volume in of the mercury(II) iodide stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits.

1. 👍 0
2. 👎 0
3. 👁 525
1. it is being diluted 81/9 times , or 9 times.
that means one part original solution, and 8 parts water.
one part stock= 500/9 ml= ...
eight parts water= 8*500/9 = ...

1. 👍 0
2. 👎 0
2. Good job, but how many significant figures should be recorded in the answer?

1. 👍 0
2. 👎 0

## Similar Questions

Calculate the concentration of I- in an aqueous solution prepared in a 250 ml volumetric flask from 50.0 ml of a 0.840 mol/L aluminum iodide solution and 160.0 ml of a 0.500 mol/L tin(IV) iodide solution.

asked by Sim on March 28, 2015
2. ### Chemistry

We can precipitate out solid lead(II) iodide from an aqueous lead(II) nitrate solution by adding potassium iodide. If we have 500. mL of 0.632 M lead(II) nitrate solution and add excess potassium iodide, how much solid lead(II)

asked by Kierstin on May 10, 2016
3. ### Chemistry

I'm sorry here is another I do not understand. How do you find out exactly how much of a solution you would need to completely precipitate another compound in the reaction? We can precipitate out solid lead(II) iodide from an

asked by Kierstin on May 10, 2016
4. ### chemistry

Lead iodide is a relatively insoluble compound. It can dissolve from the solid phase into the aqueous phase with a Keq of 0.00027. If the concentration of lead iodide in the aqueous phase 0.125 M, then: a. we need more information

asked by danny on February 28, 2015
5. ### Chemistry!!

A chemist wants to prepare a stock solution of H2SO4 so that a sample of 20.00mL will produce a solution with a concentration of .50 M when added to 100.0mL of water. A)what should the molarity of the stock solution be? B)If the

asked by Anonymous on April 22, 2013
1. ### chemistry

A chemist dissolves 0.097 g of CuSO4 ยท 5 H2O in water and dilutes the solution to the mark in a 500-mL volumetric flask. A 13.6-mL sample of this solution is then transferred to a second 500-mL volumetric flask and diluted. What

asked by Anonymous on April 14, 2015
2. ### Chemistry

Suppose 0.780 of potassium iodide is dissolved in 150. mL of a 51.0mM aqueous solution of silver nitrate. Calculate the final molarity of iodide anion in the solution. You can assume the volume of the solution doesn't change when

asked by Emma on November 7, 2018
3. ### chemistry

PLEASE SHOW PROCEDURE! You wish to prepare an aqueous solution that has a freezing point of -0.100 degrees Celsius. How many milliliters of 12.0 M HCl would you use to prepare 250.0 mL of such a solution? [Hint: Note that in a

asked by Cody on July 12, 2012
4. ### chemisty lab

determine the amounts of solute and solvent needed to prepare the following solutions. 2.0 M aqueous NaCl solution 1.0 m aqueous KCl solution 25% by mass aqueous MgCl2 solution

asked by shaknocka on February 7, 2011
5. ### chemistry

determine the amounts of solute and solvent needed to prepare the following solutions. 2.0 M aqueous NaCl solution 1.0 m aqueous KCl solution 25% by mass aqueous MgCl2 solution

asked by shaknocka lewis on February 8, 2011

More Similar Questions