Multiple ChoiceA 5.12 L sample of solution contains 0.230 g of potassium sulfate, K2SO4. Determine the concentration of K2SO4 in ppm if the density of the solution is 1.30 g/mL.128views
Multiple ChoiceCalculate the concentration in parts per billion of the following aqueous solution:0.91 mg of caffeine in a total volume of 131 mL.170views
Multiple ChoiceGlucose makes up about 0.102% by mass of human blood. Calculate this concentration in ppm.122views
Multiple ChoiceThe average human body contains about 5,000 grams of blood. What mass of arsenic is present in the body if the amount in blood is 0.86 ppb?114views
Multiple ChoiceA water sample contains the pollutant chlorobenzene with a concentration of 16 ppm (by volume). What volume of this water contains 5.01×102 mL of chlorobenzene?167views
Textbook QuestionThe maximum amounts of lead and copper allowed in drinking water are 0.015 mg/kg for lead and 1.3 mg/kg for copper. Express these values in parts per million, and tell the maximum amount of each (in grams) allowed in 100 g of water.602views
Textbook QuestionUric acid, the principal constituent of some kidney stones, has the formula C₅H₄N₄O₃. In aqueous solution, the solubility of uric acid is only 0.067 g/L. Express this concentration in (m/v)%, in parts per million, and in molarity.391views
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