Which of the following would decrease the dissolution rate of a sugar cube in water? A. increasing the temperature of the water B. decreasing the temperature of the water C. breaking the sugar cube apart D. stirring the water

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

fe 55.85 g/mol and h2o 18.02 g/mol.

a corroding iron, if that's one of your choices