Chapter 1 : Basic Principles and Practices of Clinical Chemistry Test bank Questions with Answers.

Chapter 1 : Basic Principles and Practices of Clinical Chemistry Test bank Questions with Answers. One nanogram is equivalent to how many grams? A) 10-6 B) 10-9 C) 10-12 D) 10-15 - correct answersB) 10-9 How many milliliters of 0.5N NaOH are required to make 100 milliliters of 0.2N NaOH? A) 250 B) 40 C) 25 D) 4 - correct answersB) 40 A patient sample for uric acid gave an absorbance reading of 0.4, and the 50 mg/dL standard gave an absorbance reading of 0.1. What is the concentration of uric acid in the patient's sample in grams per deciliter? A) 0.2 B) 12.5 C) 125 D) 200 - correct answersD) 200 How many millimoles of NaCl are contained in 300 mL of a 4M solution? (gmw = 58.5) A) 70 B) 120 C) 234 D) 1200 - correct answersD) 1200 How is 10 mg/dL of calcium reported in mmol/L? (gmw = 40) A) 2.5 B) 5.0 C) 10 D) 25 - correct answersA) 2.5 How many milliliters of concentrated sulfuric acid (H2S04), G.M.W. = 98 grams, specific gravity = 1.500, purity = 80%, are needed to make 400 mL of a 2N solution? A) 26.1 B) 32.7 C) 52.3 D) 65.3 - correct answersB) 32.7 7. How many grams of hydrated MgSO4 5 H20 (M.W.: MgSO4 = 119, H20 = 18) are required to make a 10% solution of MgS04? A) 5.7 g/dL B) 11.9 g/dL C) 17.6 g/dL D) 20.9 g/dL - correct answersC) 17.6 g/dL