The energy diagram shows the changes in energy during a chemical reaction. Which statement best describes the total energy change of the system?
A. Energy is absorbed, and the reactants have higher potential
energy
O B. Energy is released, and the products have higher potential energy.
O C. Energy is released, and the reactants have higher potential energy.
D. Energy is absorbed, and the products have higher potential energy

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?

Which is the most accurate name for the ionic compound cas?

Which of the following is a direct benefit of the use of assembly lines in production a. laws against theft fraud and coercion are needed to protect free choice. b. the government needs to plan efficient outcomes. c. competition among producers by itself cannot ensure a wide range of consumer choices. d. works pressure the government to guarantee minimum wages