Answer:
76.875 cm3
<h2>
Explanation:</h2>
Since: Density = 
Then: Volume = 
The mass of the box = 246g
and the density = 3.2 g/cm3
Then: The volume = 
= 76.875 cm3
Produces almost half of out nation's electricity
B) The elements become less reactive.
Phosphorus tribromide is a covalent compound because they share electron pairs.
The word elliptical refers to regular ovals.