A student obtains 500.0 mL of a solution containing an unknown concentration of calcium iodide, CaI...
A student obtains 500.0 mL of a solution containing an unknown concentration of calcium iodide, CaI 2. She pipets 25 mL of this solution into a 100 mL volumetric flask and dilutes to the mark. She then pipets 10 mL of this diluted solution into a 50 mL volumetric flask and dilutes to the mark. She analyzes some of the solution from the final volumetric flask and finds that the iodide ion concentration is 0.0000064 M. Determine the molar concentration of calcium iodide in the original solution.
Homework Answers
Add Answer to:
A student obtains 500.0 mL of a solution containing an unknown
concentration of calcium iodide, CaI...
A chemist obtains 500.0 mL of a solution containing an unknown concentration of calcium iodide (CaI...
A chemist obtains 500.0 mL of a solution containing an unknown concentration of calcium iodide (CaI 2). She pipets 25 mL of this solution into a 100 mL volumetric flask and dilutes to the mark. Shethen pipets 10 mL of this diluted solution into a 25 mL volumetric flask and dilutes to the mark. She analyzes some of the solution from the final volumetric flask and finds that the iodide ion concentration is 0.00000446 M. (in solution, calcium iodide breaks...
A chemist pipets 20 mL of a lithium sulfate solution into a 250 mL volumetric flask...
A chemist pipets 20 mL of a lithium sulfate solution into a 250 mL volumetric flask and dilutes to the mark. He analyzes the diluted solution and finds its concentration to be 0.0023 M Li 2SO 4. What was the concentration of the Li 2SO 4 in the original solution?
A student must prepare 500.0 mL of solution containing 3.550 grams of solid copper(II) sulfate. Which...
A student must prepare 500.0 mL of solution containing 3.550 grams of solid copper(II) sulfate. Which of the following statements are FALSE regarding the proper procedure to prepare this solution? I. The 3.550 grams of solid copper(II) sulfate is dissolved in a 500.0-ml volumetric flask containing 500.0 mL of water. II. The 3.550 grams of solid copper(II) sulfate is dissolved in a 500.0-ml volumetric flask containing 400 mL of distilled water before dilution to 500.0-mL. III. The 3.550 grams of...
An analytical chemist weighs out 1.300 grams of an unknown monoprotic acid into a 250 mL...
An analytical chemist weighs out 1.300 grams of an unknown monoprotic acid into a 250 mL volumetric flask and dilutes to the mark. The chemist then obtains 100 mL of the solution and titrates the 100mL of the solution with 0.1 M NaOH. When the titration reaches the equivalence point, the chemist finds he has added 24.50 mL of NaOH solution. Calculate the molar mass of the unknown
A student pipets 5.00 mL of a 5.103 M aqueous NaOH solution into a 250.00 mL...
A student pipets 5.00 mL of a 5.103 M aqueous NaOH solution into a 250.00 mL volumetric flask and dilutes up to the mark with distilled water. What is the final molarity of the dilute solution? Select one: A. 0.1 MX B. 0.10206 M C. 0.102 M D. 0.1021 M Your answer is incorrect. 86.14 mL of an acid solution was needed to neutralize 30.24 mL of a base solution of unknown concentrations. A second trial is run but this...
A student weighs out 14.6 g of AlBrz, transfers it to a 300 mL volumetric flask,...
A student weighs out 14.6 g of AlBrz, transfers it to a 300 mL volumetric flask, adds enough water to dissolve the solid and then adds water to the 300 mL mark on the neck of the flask. Calculate the concentration (in molarity units) of aluminum bromide in the resulting solution? Calculate the mass, in grams of sodium iodide that must be added to a 250 mL volumetric flask in order to prepare 250 mL of a 0.138 M aqueous...
An analytical chemist weighs out 0.274 g of an unknown diprotic acid into a 250 ml...
An analytical chemist weighs out 0.274 g of an unknown diprotic acid into a 250 ml volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.0600 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 68.1 ml of NaOH solution. Calculate the molar mass of the unknown acid. Round your answer to 3 significant digits. mol X2 ?
An analytical chemist weighs out 0.041 g of an unknown monoprotic acid into a 250 mL...
An analytical chemist weighs out 0.041 g of an unknown monoprotic acid into a 250 mL volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.1700 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 5.2 mL of NaOH solution. Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits. x 6 ?
An analytical chemist weighs out 0.026 g of an unknown triprotic acid into a 250 mL...
An analytical chemist weighs out 0.026 g of an unknown triprotic acid into a 250 mL volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.0800 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 9.9 mL of NaOH solution Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits. mol
In the laboratory, a student adds 19.3 g of potassium acetate to a 125 mL volumetric...
In the laboratory, a student adds 19.3 g of potassium acetate to a 125 mL volumetric flask and adds water to the mark on the neck of the flask. Calculate the concentration in mol/L) of potassium acetate, the potassium ion and the acetate ion in the solution [KCH3COO) - [K] [CH3C00] = 1 A student wishes to prepare 300-ml of a 0.236 M iron(III) acetate solution using solid iron(III) acetate, a 300-ml volumetric flask, and deionized water (a) How many...
A student must prepare 500.0 mL of solution containing 3.550 grams of solid copper(II) sulfate. Which of the following statements are FALSE regarding the proper procedure to prepare this solution? I. The 3.550 grams of solid copper(II) sulfate is dissolved in a 500.0-ml volumetric flask containing 500.0 mL of water. II. The 3.550 grams of solid copper(II) sulfate is dissolved in a 500.0-ml volumetric flask containing 400 mL of distilled water before dilution to 500.0-mL. III. The 3.550 grams of...
A student pipets 5.00 mL of a 5.103 M aqueous NaOH solution into a 250.00 mL volumetric flask and dilutes up to the mark with distilled water. What is the final molarity of the dilute solution? Select one: A. 0.1 MX B. 0.10206 M C. 0.102 M D. 0.1021 M Your answer is incorrect. 86.14 mL of an acid solution was needed to neutralize 30.24 mL of a base solution of unknown concentrations. A second trial is run but this...
A student weighs out 14.6 g of AlBrz, transfers it to a 300 mL volumetric flask, adds enough water to dissolve the solid and then adds water to the 300 mL mark on the neck of the flask. Calculate the concentration (in molarity units) of aluminum bromide in the resulting solution? Calculate the mass, in grams of sodium iodide that must be added to a 250 mL volumetric flask in order to prepare 250 mL of a 0.138 M aqueous...
An analytical chemist weighs out 0.274 g of an unknown diprotic acid into a 250 ml volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.0600 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 68.1 ml of NaOH solution. Calculate the molar mass of the unknown acid. Round your answer to 3 significant digits. mol X2 ?
An analytical chemist weighs out 0.041 g of an unknown monoprotic acid into a 250 mL volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.1700 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 5.2 mL of NaOH solution. Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits. x 6 ?
An analytical chemist weighs out 0.026 g of an unknown triprotic acid into a 250 mL volumetric flask and dilutes to the mark with distilled water. She then titrates this solution with 0.0800 M NaOH solution. When the titration reaches the equivalence point, the chemist finds she has added 9.9 mL of NaOH solution Calculate the molar mass of the unknown acid. Be sure your answer has the correct number of significant digits. mol
In the laboratory, a student adds 19.3 g of potassium acetate to a 125 mL volumetric flask and adds water to the mark on the neck of the flask. Calculate the concentration in mol/L) of potassium acetate, the potassium ion and the acetate ion in the solution [KCH3COO) - [K] [CH3C00] = 1 A student wishes to prepare 300-ml of a 0.236 M iron(III) acetate solution using solid iron(III) acetate, a 300-ml volumetric flask, and deionized water (a) How many...
Most questions answered within 3 hours.
-
Starting with benzene, synthesize 1-phenyl-1-butyne.
Show intermediates and reagents.
asked 12 minutes ago -
Create a 32-run crossed array design with six control factors
and two noise factors such that...
asked 1 hour ago -
A 500g sample of sand from source A has the following amounts
retained on each sieve....
asked 1 hour ago -
In
your own words, please explain the essay by John Keynes wrote "The
End of Laissez...
asked 1 hour ago -
How are the matrix and pixels related? Why are smaller
pixels better for diagnostic quality?
asked 1 hour ago -
2. An AC generator has 80 rectangular loops on
its armature. Each loop is 11 cm...
asked 1 hour ago -
Please help me with this question. Consider Aldi’s current and
potential geographic markets (see Exhibit 4...
asked 1 hour ago -
What are the main components of the fermentation process and
give an explanation of each? Include...
asked 1 hour ago -
Explain which types of cells in the body (belonging to which
organs, etc.) are sensitive to...
asked 1 hour ago -
A single cable supports an 703-kg elevator car. What is the
tension in the cable when...
asked 1 hour ago -
among the three different ways to link CSS specifications to an
HTML document (inline CSS, document...
asked 1 hour ago -
(1) Write the net ionic equation for the reaction that occurs
when equal volumes of 0.191...
asked 2 hours ago