What is the total pressure of a gas mixture that contains 31.0 kPa of oxygen, 26.8 kPa of nitrogen and 26.7 kPa of hydrogen? A
57.7kPa
о
B
84.5kPa
o
c
56.7kPa
o
D
85.4kPa

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.