13. (a) if h2s gas is led into a solution of 0.10m fecl2 , what is the highest ph value be controlled in the solution for just no fes precipitate forming?
(b) if h2s gas is led into a solution that is 0.10m each in fecl2 and cucl2 , will fes precipitate from the solution?
(the saturated solution of h2s in water is 0.10m at 25 degrees celsius, 1atm.)

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

Calculate: select the worksheet tab. this tab you calculate the analyte concentration.  fill in the first set of boxes ("moles h2so4" and "moles naoh") based on the coefficients in the balanced equation. (if there is no coefficient, the value is 1.)  record the appropriate volumes in the "ml naoh" and "ml h2so4" boxes.  record the concentration of the titrant in the m naoh box. click calculate. what is the concentration listed

Define a is a tiny pavket of energy