A for the first and b for the second!!:))
Answer:a formula giving the number of atoms of each of the elements present in one molecule of a specific compound.
Explanation:
A chemical reaction is a reaction that changes the molecular structure and is normally irreversible.
Answer:
The flocculation basin often has a number of compartments with decreasing mixing speeds as the water advances through the basin. ... This compartmentalized chamber allows increasingly larger floes to form without being broken apart by the mixing blades.
