Question

That they had already committed elsewhere call your comments please send my dad​

Answer 1

Explanation:

hayour ha your name tag please

Answer 2

There are hundreds of chemical reactions going on at the same time in a burning lump of coal, or in a candle flame for that matter. Each chemical reaction has its own chemical energy change.

In the end though, a complete combustion of coal will generate roughly 10 kWh of heat and the chemical equation is quite simple:Biomolecule, also called biological molecule, any of numerous substances that are produced by cells and living organisms. Biomolecules have a wide range of sizes and structures and perform a vast array of functions. The four major types of biomolecules are carbohydrates, lipids, nucleic acids, and proteins.