The formula is NaCl. this indicates that it has one sodium atom and one chlorine atom. it is an ionic compound, because it contains one metal and one nonmetal atom.
Nitrous oxide will stay in the atmosphere the longest.
Answer:
82500000000000000000000000
Explanation:
This is the only answer I can come up with.
The concentration of Ca2+ ions is half that of the Cl- ions.