Circle your final answer. Describe schematically (draw a picture) how to make five sample dilutions from 1:2 to 1:32 so that each tube has a final volume of 0.1 mL and minimal sample is wasted. You...

Circle your final answer.

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  Describe schematically (draw a picture) how to make five sample dilutions from 1:2 to 1:32 so that each tube has a final volume of 0.1 mL and minimal sample is wasted.
  

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  You need to prepare 1 dL of a 100 mg/mL solution of CuSO₄.  The available reagent is CuSO₄·5 H₂O.  (CuSO₄
  with 5 water molecules attached)  How many grams of this hydrated reagent is needed to make 1 dL of a 100 mg/mL solution of CuSO₄?
  

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  The hydrogen ion concentration of a solution is 0.0000937mol/L.  What is the pH?
  

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  What is the hydrogen ion concentration of an acetate buffer with a pH of 4.24?
  

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  You need to make 2L of 0.2M acetic acid (CH₃COOH).  All you have available is concentrated glacial acetic acid (assay value, 99%; specific gravity, 1.05 g/mL).  How many mL of the glacial acetic acid is needed to make this solution?
  

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  Calculate the cv. for a group of glucose results.  The mean value is 250 mg/dL and the standard deviation is 7.5 mg/dL.
  

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  A 1:5 dilution of a 15 mg/mL glucose solution was made by the Medical Technologist.  Once the dilution was made, the technologist transferred 1 mL of the solution into 4 mL of diluent. What is the final concentration of glucose in mg/dL?
  

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  You have a series of 5 tubes, each of which contain 4 mL diluent. You add 1 mL of sample to the first tube, mix and take 1 mL of this mixture and add to the second tube, mix and take 1 mL of this mixture and add to the next. If you continue this process with each tube, what is the dilution of the sample in the last tube?
  

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  You made a 1:2 dilution of serum. Then you added 4 mL of that to 8 mL of water. Then 1 mL of that was diluted to 8 mL. What was the final dilution of serum?
  

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  You took 8 mL of a glucose solution and diluted it to 20 mL. Then a 1:10 dilution was made of that. What was the final dilution?
  


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  In performing a serological procedure, you add 1 mL of serum to 10 mL of saline to tube
  


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  A 1:2 serial dilution is then made (starting from tube #2). What is the dilution of serum contained in tube 6?
  


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  How would you set up a series of tubes with a 1:4 dilution such that you end up with 3 mL of solution in each tube at the end of the procedure?
  

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  How would you set up a 1:2 dilution using serum and diluent with final total volume of 0.5 mL.


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  What is the final concentration of your solution when you took 1 mL of a 100 mg/dL solution and added 9 mL of water?
  

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  You had a 1,000 mg/dL solution of glucose. You took 1 mL of that and diluted it to 5 mL. Then you took 4 mL of that and added it to 12 mL of water. What is the final concentration of your glucose solution?
  

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  How would you make 50 mg/dL working glucose solution from a
  2.0 g/dL stock glucose solution?
  

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  You have a solution of HCl that has a specific gravity of 1.100 and 89% assay. What is the normality?
  

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  How would you make 500 mL of 0.2N CaCl₂
  solution from a stock solution with a sp. gr. of 1.32 and 75% assay?
  


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  You need to make 500 mL of 4N CaCl2. You only have CaCl₂·5H20 on the shelf. How many grams of CaCl₂·5H20 will you need to weigh out?


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  A ten fold serial dilution is set using 3 tubes. Each tube contains 9 mL of water.  1mL of 9N NaCl is added to the first tube.  The tube is mixed and 1mL of this solution is added to the second tube. The process is repeated for the third tube.  What is the dilution in tube three and what is the final concentration in this tube.
  


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  Calculate the mean, SD, and CV for the following data: 44, 47, 48, 43, 48.
  

  
  


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  Calculate the mean, SD, and CV for the following data: 93, 92, 94, 91, 97, 100, 98, 86, 96, 98.
  


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  If the data in question 22 above were for glucose control material, calculate the control limits (range) that would contain 95% of the expected values