Hydrogen peroxide decomposes exothermically by catalysis with ki to form oxygen gas: h2o2(aq) ki ? h2o(l) + o2(g) if 70.17 ml of a 0.882 m solution of are used to perform this reaction, yielding 148.1 cl of oxygen gas at 198.2? f and 789.1 torr, what is the percent yield of this reaction?

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent

Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?

Organisms are classified as producer or consumers according to the way they ?