Solve the problems. Express each answer to the correct number of significant figures. Type the correct answer in each box. (1.20 x 10^4) x (2.152 x 10^2) = ? x 10^6 208/5.3 = ?​

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.

it's c. elements are placed in rows based on how may valencies electrons have.

narendra modi is currently the pm of india

explanation:

c. 4.54 x 10–12 j happens to be correct