Ahelium nucleus is formed from hydrogen nuclei. what nuclear change has occured? a.) beta decay b.) none c.) alpha decay d.) nuclear fusion

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.

2b2t

explanation:

2b2t

yes the answer is total mass in unchanged   : )