Which property of coal makes it ideal for use in a power plant? check all that apply.

it burns easily.
it makes ash.
it is renewable.
it produces a lot of energy.
it contains mercury.

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system