Which chemical was used earlier for giving anesthesia to patients?

In a randomized controlled trial, patients with meningitis who were treated with corticosteroids had lower rates of death, hearing loss, and long-term neurological effects. Which of the following is a randomized comparison?

a) Patients who remained for the duration of the trial versus those who dropped out after randomization.

b) Patients who responded to the disease versus those who did not.

c) The sample of patients who took the drug before being randomized and developed the disease.

d) The sample of patients who, at the time of randomization, were severely affected by the disease

Kinetic energy differs from chemical energy in that

a. chemical energy is a particular form of kinetic energy.

b. kinetic energy depends on the movement of atoms, whereas chemical energy depends on the movement of molecules.

c. kinetic energy is the energy of a moving object, whereas chemical energy is the potential energy of molecules.

d. kinetic energy is stored energy that has the potential to do work, and chemical energy is the energy of movement.

e. kinetic energy can be converted into various forms of energy, whereas chemical energy can only be converted into heat.

Explain chemical energy.