Is there any evidence that a reaction has occurred? current is changed

a precipitate is formed

the amount of ion in solution has changed

(pick one out of the three)

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.

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

Using the thermodynamic information in the aleks data tab, calculate the standard reaction free energy of the following chemical reaction: →+p4o10s6h2ol4h3po4s round your answer to zero decimal places.