Pentane with molecular formula C5H 12, exists in three Isomeric forms. One shows linear carbon chains, another has one -CHg groups present on the third carbon atom, and the third has two -CHa
groups present on the second carbon atom. What types of Isomers are these?
OA
Geometric Isomers
O B. Structural Isomers
Oc
Halotropic Isomers

your picture is not part of the scientific method.

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.