Which of the following statement/s about the energy involved in a chemical reaction is/are correct? I. The energy stored in a chemical bonds is kinetic energy

II. The total energy is conserved during a chemical reaction

III. chemical energy can be converted to other forms of energy

IV. Energy is needed to both break bonds and form new bonds

(1 Point)

A. II, III, and IV only

B. II and III only

C. I only

D. III and IV only

Multiple choice. choose the one alternative that best completes the statement or answers the question. 1) if the force on an object is in the negative direction, the work it does on the object must be 1) a) negative. b) positive. c) the work could be either positive or negative, depending on the direction the object moves. 2) a truck has four times the mass of a car and is moving with twice the speed of the car. if kt and kc refer to the kinetic energies of truck and car respectively, it is correct to say that 2) a) kt = 16kc . b) kt = 1 2 kc. c) kt = kc . d) kt = 2kc . e) kt = 4kc . 3) you and your friend, who weighs the same as you, want to go to the top of the eiffel tower. your friend takes the elevator straight up. you decide to walk up the spiral stairway, taking longer to do so. compare the gravitational