The answer is D) the bonding in sodium chloride crystals is strong
Answer:
The body with 2.7
has a larger volume
Explanation:
There is a missespelling in the question. The units of density cannot be g, they usually are 
In order to answer this question, we need to use the formula of the density of a body:

For body A:
Mass (M) = 5.0 g
Density (D) = 2.7 
2.7
= 5g * 1/V
V1 = 5g / (2.7
)
V1 = 1.85 
For Body B:
Mass (M) = 5.0 g
Density (D) = 8.4 
8.4
= 5g * 1/V
V2 = 5g / (8.4
)
V2 = 0.59 
So V1 is bigger than V2
Energy is released as a bond is formed
There are 342.29648 grams in 1 molecule