A nurse measures the volume of a drop of medicine. The volume of drop of medicine is 1.82 mL. What is the volume in deciliters of 100 drops of medicine?

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?  

The phase where ice changes directly to gas is called sublimation 

The answer is d) light rays pass through mirrors at an angle.

So the main goal for the elements is stability which is a complete/full valence shell and typically the magic number for a stable element is 8 valence electron but not always. so elements to the left of the periodic table tend to be way less stable then those on the right, so the elements on the left are much more reactive.