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1. ibuprofen (c13h18o2) is the active ingredient in many nonprescription pain relievers. each tablet contains 200 mg of ibuprofen, and a typical adult dose is two tablets every six hours.
• determine the molar mass of ibuprofen. show all steps to find the answer.
• calculate the number of moles of ibuprofen in a single tablet. show all steps to find the answer.
• calculate the number of moles of ibuprofen that an adult would have taken if she took four doses of ibuprofen in one day. show all steps to find the answer.

Define the kinetic molecular theory

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

Is a pencil falling to the floor anon contact force, a force, or a contact force