Answer:
D. The chemical formula
Explanation:
For example, in the compound KCl, we know that there are two elements present because you can see it in the chemical formula. We know that KCl consists of potassium and chloride ions.
i think it is Synthesis Reaction because in a synthesis reaction one or more simple substances combine to form a more complex substance.
If there is two or more reactions yilding one product is another way to identify a synthesis reaction.
For the chemical equation for this synthesis reaction really looks like:
reactant +reactant = product
if im wrong correct me but have a blessed day/night
=)
Radon is a naturally occurring radioactive gas. It comes from radioactive decay of uranium.
It is usually found in igneous rock and soil, but in some cases, well water can also be a source of radon.