In which example would the most transfer of energy take place from Mechanical energy to Thermal (heat) energy? Question 2 options:

A. When a feather falls from the sky

B. When a metal plate is pressing against a fast spinning piece of steel hard enough to stop it

C. When a skydiver opens her parachute

D. When a child slides down a waterslide on an innertube

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.

its first and third is your answer i did the qustion the fourth isnt right