Answer:
57.8kg
Explanation:
Potential energy is given by:

Where U is potential energy, m is mass, g is acceleration due to gravity, and h is height. Using this equation:

In my opinion the answer is D
Answer: The layers are ordered by density, with the least dense layer on top, and the densest layer on the bottom.
Explanation:
Plato
You're going to divide the mass of chlorine within the compound by the mass of the compound, and then multiply the result by 100 to get the answer