Find the two third life t2/3 of a first order reaction in which k =5.48×10^_14per sec

Atank contains 240 liters of fluid in which 10 grams of salt is dissolved. brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 6 l/min; the well-mixed solution is pumped out at the same rate. find the number a(t) of grams of salt in the tank at time t.

Noble gases are the most reactive elements on the periodic table. a. true b. false

What type of reaction is zn + cucl2 → cu + zncl2?