Part A The forensic technician at a crime scene has just prepared a luminol stock solution by adding 12.0 g of luminol into a total volume of 75.0 mL of H2O. What is the molarity of the stock solution of luminol? Express your answer with the appropriate units. > View Available Hint(s) ? molarity of luminol solution = Value Units

Part A The forensic technician at a crime scene has just prepared a luminol stock solution by adding 12.0 g of luminol into a total volume of 75.0 mL of H2O. What is the molarity of the stock solution of luminol? Express your answer with the appropriate units. > View Available Hint(s) ? molarity of luminol solution = Value Units

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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How do you calculate the concentration of a solution in units of molarity? a Divide the number of moles of solute by the volume of the solution in liters. Divide the number of moles of solvent by the mass of the solute in kilograms. Divide the number of moles of solute by the b number of moles of solvent. O d Divide the number of moles of solute by the mass of the solvent in kilograms.
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1.) What mass of NaCl (in g) is necessary for 5.25 L of a 1.25 M solution? 2.) You have measured out 75.00 g of MgCl2 (formula weight: 58.33 g/mol) to make a solution. What must your final volume be (in L) if you want a solution made from this mass of MgCl2 to have concentration of 0.175 M? 3.) You have a concentrated solution of 5.00 M NaOH. If you dilute 365.2 mL of this solution with water to a final volume of 2.00 L, what is the molarity of the diluted solution? 4.) What volume (in mL) of 5.00 M HCl must diluted to a final volume of 1.50 L to make a solution with a final concentration of 0.470 M?
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In the laboratory you dilute 2.56 mL of a concentrated 12.0 M hydrochloric acid solution to a total volume of 100 mL. What is the concentration of the dilute solution? M
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16. A 0.5 M KCl solution contains 74.55 g of KCl (molar mass 74.55 g/mol) in 2000 mL of solution. a. Does the ratio 74.55 g KCI/2000 ml provide the correct molarity for this solution? b. What units do the amount of solute and the volume of solution need to be in to obtain the molarity of 0.5 M? Show the calculation.