You need to make an aqueous solution of 0.167 m iron(iii) acetate for an experiment in lab, using a 125 ml volumetric flask. how much solid iron(iii) acetate should you add? how many milliliters of an aqueous solution of 0.137 m potassium fluoride is needed to obtain 16.8 grams of the saltion concentrationin the laboratory you dissolve 19.6 g of sodium carbonate in a volumetric flask and add water to a total volume of 375 ml. what is the molarity of the solution? m. what is the concentration of the sodium cation? m.

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

може ли да зареждате повече информация, моля

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.