Author: Anonymous

20 uL of whole blood was added to 380 uL of Turk’s diluting solution to perform a manual WBC count. 75 WBCs were counted on 4 large squares in each chamber of the hemocytometer. How many cells/L would be reported?

The pH of a solution is 3.4. What is the [H+]?

A stock standard of urea nitrogen contains 20 mg/mL of urea nitrogen. How would you make 200 mL of a 20 mg/dL working standard?

A stock standard contains 140 Eq/L of sodium and 5 Eq/L of potassium. How would the working standard of 140 mEq/L and 5 mEq/L be prepared, respectively?

Determine the pH if the total CO2 is 29.5 mmol/L and the pCO2 is 46.0 mm Hg. The pK is 6.10.

Determine the logs for each of the following: 860 475,000 0.00098 0.03777

Perform the following conversions: 1500 uL to mL 50 dL to mL 500 L to dL 0.005 g to mg 5.7 g to mg 32 dL to L

Calculate the pH of a 0.0001 N solution of NaOH

Convert 200 mg/dL of CaCl2 to mg/dL of Cl. (Atomic weight for calcium is 40.1; for chloride is 35.5)

Find the LCD for 1/5, 3/8, 1/2, 2/7.