You are working in a hospital and you saw that a patient took 500 mg of ibuprofen but the chart specify 900mg. What is the percent error?a) 55% b) 180% c) 44% d) 60%

Argon gas has a density of 1.4 g/L at standard conditions. How many argon atoms are 2.0 L of argon gas?

Commercial ibuprofen tablets contain 200 mg of ibuprofen each. The commercial tablets have the active ingredient (ibuprofen) in addition to several other additives (e.g. starch, sucrose, etc) to assist in digestion. There are 6 tablets that are used in the experiment. The maximum amount of available ibuprofen is (6 x 200 mg) = 1200 mg. Six pills Pure Ibup (after m.p. recrys.) Crude ibup. Gross mass (g) 2.89 29.50 2.09 Tare mass (g) 0.89 28.32 1.00 Net mass (g) |2g 1.18 g 1.09 g 70-71C 1) Calculate the percentage of ibuprofen in each pill. 2) Calculate the percent recovery of ibuprofen from the pills, based on the crude ibuprofen mass. 3) Calculate the percent recovery of pure ibuprofen from the crude. 4) Why does the melting point (70-71)above match neither the enantiomers' nor the racemate's? Does it mean that the substance is impure, or perhaps isn't even ibuprofen at all? (Racemic mixture:75-77C, Enantiomer:52-53C)

How many Mg are in 5.52 ×1014 pg?