Lập PTHH và cho biết tỉ lệ số nguyên tử, số phân tử của các chất trong mỗi phản ứng: a) Fe + Cl2 - - -> FeCl3 b) Cu + O2 - - -> CuO
c) K + H2O - - -> KOH + H2 d) KOH + CuCl2 - - -> Cu(OH)2 + KCl
e) Al + O2 - - -> Al2O3

Match the acid base pairs by arranging the acid name with the conjugate base formula. hydrogen carbonate hydrogen phosphate carbonic acid read water sulfuric acid phosphoric acid a. co32- b. hso4- c. hco3- d. po43- e. h2po4- f. oh-

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.