The Bottom Line: What You Really Need to Know. 1  Trazodone (Trade Names: Deseryl) is an antidepressant with many other uses.  The usual dose depends on what it is being taken for and can range from 150-600 mg/day.
Figure 1. An XKCD comic showing the comparative energy density of Uranium. Energy density is the amount of energy that can be stored in a given mass of a substance or system. The higher the energy density of a system or material, the greater the amount of energy stored in its mass. Energy can be stored in many different types of substances and systems. A material can release energy in four types of reactions.
Energy per unit volume has the same physical units as pressure, and in many circumstances is a synonym: for example, the energy density of a magnetic field may be expressed as a physical pressure, and the energy required to compress a compressed gas a little more may be determined by multiplying the difference between the gas pressure and the external pressure by the change in volume.