In chemistry you need to dilute an alcohol solution down. you have a 90% alcohol solution and a 20% alcohol solution. if you want to end up with 335 L of 50% alcohol, how much of each do you need

Find the quotient with the restriction.

With both problems. a.s.a.p directions on photo ^

Situation: . find the substance's half-life, in days. round your answer to the nearest tenth. a 11 gram sample of a substance that's used to treat thyroid disorders has a k. value of 0.1247. enter the correct answer n - noekt done no - initial mass (at time t = 0) n - mass at timet k a positive constant that depends on the substance itself and on the units used to measure time t= time, in days