It’s sometimes said that water is a “universal solvent.” research this term. why do some people describe water in this way? what aspect of its structure makes it a good solvent? if a “universal solvent” could really dissolve anything, what problems do you imagine that would cause in everyday life?

Water is called a "universal solvent' due to its ability to dissolve many substances. It can dissolve almost all substances. For every substance, water takes its own time to dissolve it. This is due to the polarity present in it.

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.