WebIn this equation, A is the absorbance of the solution, a is the molar absorptivity (a constant for this complex), b is the path length of cuvette (in cm), and c is the molar concentration of the solution being measured. If the same cuvette is used to measure all of the solutions, then a and b are constant. This means that the absorbance of a solution is directly … Webtherapeutic index of a drug is the ratio of the dose that produces toxicity to the dose that produces a clinically desired or effective response. TD50 = the dose of drug that causes a toxic response in 50% of the population. ED50 = the dose of drug that is therapeutically effective in 50% of the population. a safer drug has a higher therapeutic ...
Solved The molecular formula of acetylsalicylic acid Chegg.com
http://gzscienceclassonline.weebly.com/uploads/1/1/3/6/11360172/purity_of_aspirin.pdf WebFeb 12, 2024 · Using Graham's law of diffusion: (Rate 1 /Rate 2) = (Mass 2 /Mass 1) 1/2 (Rate A /Rate B) = (Mass B /Mass A) 1/2 0.75 = (32g/Mass A) 1/2 0.75 2 = (32g/Mass A) Mass A = (32g/0.5625) MassA = 56.8888g 3. Using Fick's first law: J = -D (dc/dx) Where: J = unknown flux D = 0.29×10 -9 cm 2 /s how bright should monitor be
Aspirin sodium C9H7NaO4 - PubChem
WebOct 15, 2024 · Daily aspirin use increases the risk of developing a stomach ulcer. If you already have a bleeding ulcer or gastrointestinal bleeding, taking aspirin may cause … Web0 = mass of aspirin initially present (mg) K. app = apparent first order rate constant (min-1) t = time of sampling (min). For example, 0 min, 15 min, 30 min etc. This equation is of the form: y =mx + b. where, m = the slope of the line . b = the y intercept . For the hydrolysis of aspirin in buffered solution (pH = 7.5), a semi-log plot of the ... WebThere are five possible outcomes to your testing: 1) None of the unknowns are aspirin 2) the unknown presumed to be sugar is aspirin 3) the unknown presumed to be salt is aspirin 4) the unknown presumed to be cornstarch is aspirin 5) … how bright should a room be