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Bookmark or Share- How do you calculate concentration from absorbance? - SocraticYou will use Beer's law. A = εmCl The basic idea here is to use a graph plotting Absorbance vs. Concentration of known solutions. Once you have that you can compare the absorbance value of an unknown sample to figure out its concentration. You will be applying Beer's law to calculate the concentration. The equation for Beer's law is: A = εmCl (A=absorbance, εm = molar extinction coefficient ...
- How is Le Chatelier's principle used to treat CO poisoning?The patient may live. The process is slow. It takes about 74 min to remove half of the "CO" by breathing pure "O"_2, compared to 320 min with normal air. The chances of survival improve greatly if the patient can be transported to a hyperbaric chamber and breathe pressurized "O"_2. This pushes the position of equilibrium even further to the left.
- When do you use patients, patient's, or patients'? - SocraticMore than one patient = patients One patient has something = patient's Many patients have something = patients' Examples: I have several patients to see today. This pateint's chart is incorrect. After that 5-car accident, the patients' families were here immediately.
- Nuclear Half-Life Calculations - Chemistry - SocraticBarium-131 is a radioactive isotope of the element barium used gastrointestinal tract scans in doctors offices. Barium-131 has a half-life of 10 days. lf a patient drinks 3.9 grams of barium-131 how much of the isotope will be left after 1 days?
- A doctor prescribes 125 milligrams of a therapeutic drug ... - SocraticExponential decay model: y=x(1-r)^t , half life of tablet is about 2 hours and after t=3 hours , remaining drug on patient's system is 42.875 mg. Initial drug x=125 mg ; rate of decay r=30/100=0.3 gm/hour Exponential model: y=x(1-r)^t=125(1-0.3)^t=125*0.7^t Half life: y=125/2=62.5mg :. 62.5 = 125*0.7^t or 0.7^t= 1/2 . Taking logarithm on both sides we get , t log (0.7) = log (0.5) :. t= log(0. ...
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