What is the curie used to measure? 0
amount of radiation equaling 3.7 1 100 disintegrations per second
amount of radiation biological material absorbs
amount of gamma radiation needed to produce a specific number of positive or negative particles
amount of radiation needed to produce 1.6 2 102positive or negative particles due to gamma rays passing through one gram of air

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.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

the answer is 75.0%.