Balancing chemical equations ! i will mark brainliest! any with any problems is appreciated, especially if you can explain how to do these sorts of problems.

List four observations that indicate that a chemical reaction may be taking place

How many neutrons does a atom of cobalt have?

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle