According to the Law of Conservation of Matter, how many grams of products can be expected if the total mass of the reactants is 50 grams? (assume no errors)
A. 50g
B. half as much
C. more than 50g
D. about 10g

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.

catya your not at all which answer i've seen you do this on another question!