what is the density of the rock?

Answer:
Density = 0.64
Step-by-step explanation:
Density = mass/volume
We know that the mass of the rock is 16g and based on that picture, the volume of the rock is 25mL (because 75mL - 50mL = 25mL). So all we have to do is just plug in these values to the density equation above.
Density = 16 ÷ 25
Density = 0.64
Hope this helps! I apologize if I'm incorrect