Which of the following statements about energy is true? i. kinetic energy cannot be transformed into another type of energy. ii. kinetic energy can be transformed into potential energy. iii. potential energy can be transformed into kinetic energy. iv. potential energy cannot be transformed into another type of energy. a. i and iv only b. ii and iii only c. i and iii only d. ii and iv only

B

Explanation:

First Law of thermodynamics says energy of the universe is constant and can only be changed in other forms of energy

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.