<span>In thermodynamics, the internal energy of a thermodynamic system, or a body with well-defined boundaries, denoted by U, or sometimes E, is the total of the kinetic energy due to the motion of molecules (translational, rotational, vibrational) and the potential energy associated with the vibrational and electric energy of atoms within molecules or crystals. It includes the energy in all the chemical bonds, and the energy of the free, conduction electrons in metals.</span>
The answer is 35.4335
Hope this helped! (Plz mark me brainliest!)
Answer:
Air
Explanation:
It takes up space/ the rest do not
Vol.250 before its to much pressure
B and D is out. It cant be A because heat of combustion is substance not compound. So the answer is D.
