8) If you had solution? to make this solution in a 50 ml. conical tube What is y

Question

8) If you had solution? to make this solution in a 50 ml. conical tube What is your diluent for this aqueous h) How much diluent did you add? Show your work. 5. W e have 10X TBE (Tris/Borate/EDTA) solution and need to make 75 ml of o.SX solution. a) What is the stock concentration? b) What is the final concentration? c) What is the starting volume? d) What is the final volume? e) Write out the equation used to solve this 0 Solve the equation. Show your work g) Make the solution in a 50 mL conical tube. What is your diluent for this aqueous solution? h) How much diluent would you add? Show your work. 6. You examined an old container of NaCI and it reads 58.44 a) What is the molecular weight? Indicate the units. If you don't know look it up. b) What are the units of Molarity? If you don't know look it up.

Explanation / Answer

5-

A- stock concentration is 10X

B- Final concentration is 0.5X

C- stating volume is 3.75 ml

D- Final volume is 75ml

E- M1V1=M2V2

M1- concentration of stock solution

M2 - concentration of final solution

V1 - volume of stock solution

V2 - Final volume

F- 10X *V1 = 0.5X *75

V1 = 0.5*75/10

3.75ml

G- water.

H -

M1V1=M2V2

10 * V1 = 50*0.5

V1 = 50*0.5/10

2.5ml

SO we need 2.5 ml of 10X TBE and 47.5 ml of diluent

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