solution. You have 2.5ml of a 1mg/mL NaCl solution. You need to make 5 mL of a 0.25mg/mL HAVE (Stock solution) C₁ 1mg/mL NaCl V₁ = ? mL Please note: NEED (New solution) C₂ = 0.25mg/mL V₂ = 5mL • The needed/ new solution is more dilute (less concentrated) than the stock solution. • It does not matter how much (volume) of stock solution one has, what matters is how much is needed to make a new solution of given concentration and volume. • The units of volume and concentration on both sides of the equation must be the same. C*Vi C2 * V2 (1mg/mL) (V1mL) (0.25mg/mL) * (5mL) V1 mL (0.25mg/ml) * (5mL) = 1mg/mL 1.25 mg 1 mg/ml V₁ = 1.25mL Even though you had 2.5mL of stock solution, only 1.25mL of it is needed to make the diluted solution. • The final volume of the new solution is 5mL. You will need to add (V1-V2 = 5ml - 1.25mL) 3.75mL of diluent to the 1.25mL stock solution.

solution. You have 2.5ml of a 1mg/mL NaCl solution. You need to make 5 mL of a 0.25mg/mL HAVE (Stock solution) C₁ 1mg/mL NaCl V₁ = ? mL Please note: NEED (New solution) C₂ = 0.25mg/mL V₂ = 5mL • The needed/ new solution is more dilute (less concentrated) than the stock solution. • It does not matter how much (volume) of stock solution one has, what matters is how much is needed to make a new solution of given concentration and volume. • The units of volume and concentration on both sides of the equation must be the same. CVi C2 V2 (1mg/mL) (V1mL) (0.25mg/mL) * (5mL) V1 mL (0.25mg/ml) * (5mL) = 1mg/mL 1.25 mg 1 mg/ml V₁ = 1.25mL Even though you had 2.5mL of stock solution, only 1.25mL of it is needed to make the diluted solution. • The final volume of the new solution is 5mL. You will need to add (V1-V2 = 5ml - 1.25mL) 3.75mL of diluent to the 1.25mL stock solution.

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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