Answer:
207g
Explanation:
207.2 to be more specific
It has the most mass. but the electron cloud takes up the most space.
Answer:
I don't fully understand what this is about...
Explanation:
sorry :(
Answer:
38.9 grams of 
Explanation:
0.187 mol BaCl2 x 
0.187 m x 208 g/m
0.187 x 208 g
38.896 g --> 38.9 g BaCl2