Question

According to the law of conservation of matter, we know that the total number of atoms does not change in a chemical reaction and

thus mass is conserved. The reactant in this model is hydrogen peroxide Hydrogen peroxide decomposes to produce water and
oxygen gas. How many water molecules must be added to complete this model?
es)

Answer 1

Step-by-step explanation:

H202 = H20 + O2

by balancing the this skeletal equation : he get

2H202 ( hydrogen peroxide) = 2H20( water) + O2 (oxygen)

so 1 more water molecules is needed to complete this model ..