If a sample of copper with a density of 8.90 g/cm3 displaces 13.0 ml of water when placed in a beaker, what is its mass? a 1.46 g b. 0.685 g c. 116 g

When a body is partially or totally immersed in a fluid it displaces fluid with a volume equivalent to its volume.
The volume of water displaced is equal to the volume of copper
Therefore; mass of copper will be; 
= 8.9 × 13 = 115.7 g
The mass of copper is 116 grams 
 

Most likely a is the answer - because  you generate   38 atp's but also consume an atp.   each atp gives approx. less than 4 kcal so probably a is the closest answer.