Question

MODEL 7-Conversion Factors from Other Concentration Units Conversion Factors Statement The average concentration of bromide ions in sea water is 67.3 10° g sea water 67.3 g Br 67.3 g Br 10° g sea water ppm 3.6 g K 1000 g banana 1000 g banana The average banana contains 3.6 ppt potassium 3.6 g K 10° gair 4.7 g H,S 10 g air The average human can detect H,S is air by smell at 4.7 ppb 4.7 g H,S

Answer 1

Q42: a. 49 g of Chromium / 10⁶ g of water or 10⁶ g of water / 49 g of Chromium

b. 160 g of Iodine / 10⁶ gram of human tissue or 10⁶ gram of human tissue / 160 g of Iodine

43. a) mass of water = 2.5 kg = 2500 g

Since Chromium has a ppm of 49; mass of Chromium = 2500 * 49 / 10⁶ = 0.123 g

b) Since iodine has a ppm of 160, mass of iodine in a 180 pound man = 180 * 160 / 10⁶ = 0.029 lb = 0.029 * 453.6 =

13.2 g

44. Mercury concentration = 0.17 ppm

Mass of mercury released = 852,000 * 907.2 * 0.17 / 10⁶ = 131.4 kg