Two of the emerging technologies in reducing automobile emissions are electric cars and hydrogen fuel cars. Both work by converting chemical energy to electrical energy then to mechanical energy. However, electric cars require charging stations, while hydrogen fuel cars require refilling stations. Which technology is better? Why?

In what type of molecular energy is temperature mostly related to?

A. Potential Energy

B. Kinetic Energy

C. Electrical Energy

D. Mechanical Energy in general

Electrolysis is:

Select one:

a. the splitting of atomic nuclei by electrical energy.

b. the splitting of atoms by electrical energy.

c. the passage of electrical energy through a split-field armature.

d. the chemical reaction which accompanies passage of electrical energy through a liquid electrolyte.

e. the chemical reaction which accompanies passage of electrical energy through a metallic liquid.

Reasonable efficiency for converting chemical energy to electrical energy via combustion is 30%. Calculate how many pounds of coal must be burned to run your reading lamp for two hours of studying for a chemistry exam. A typical reading lamP has a 75 W bulb. Assume that coal is pure graphite. (1 W = 1 J/s.)

________ Ibs.