Calculate either [ h 3 o + ] or [ oh − ] for each of the solutions.
solution a: [ oh − ] = 3.33 × 10 − 7 m
solution a: [ h 3 o + ] = m
solution b: [ h 3 o + ] = 9.33 × 10 − 9 m
solution b: [ oh − ] = m
solution c: [ h 3 o + ] = 5.65 × 10 − 4 m
solution c: [ oh − ] = m

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.

What is the independent variable in this investigation? mass volume sample number substance density

Consider the reduction reactions and their equilibrium constants. cu+(aq)+e−↽−−⇀cu(s)pb2+(aq)+2e−↽−−⇀pb(s)fe3+(aq)+3e−↽−−⇀fe(=6.2×108=4.0×10−5=9.3×10−3 cu + ( aq ) + e − ↽ − − ⇀ cu ( s ) k =6.2× 10 8 pb 2 + ( aq ) +2 e − ↽ − − ⇀ pb ( s ) k =4.0× 10 − 5 fe 3 + ( aq ) +3 e − ↽ − − ⇀ fe ( s ) k =9.3× 10 − 3 arrange these ions from strongest to weakest oxidizing agent.