Explanation:
atomic number;number of protons in an atom of an element.
mass number ;number of nucleons ( neutrons) in an atom of an element.
1mol aluminium chloride gives 1mol aluminium and 3mol chloride
density equals mass divided by volume
d=m/v
m=v*d
=78.3*2.7
=211.41grams
The answer is B.Let it sit
A) the average global temp. Would decrease
