Which of the following best explains the motion of the box on the table? Image result for image box on a table A. The box is moving downward because of the force called gravity.
B. The box is moving upward because of the force called gravity.
C. The box is not moving because the table is pushing it upward more than gravity is pulling it downward.
D. The box is not moving because the table is pushing it upward just as much as gravity is pulling it downward

Suppose a pair of chemical compounds a and b can react in two different ways: a + b -> c reaction 1 gives product c. a + b -> d reaction 2 gives product d. the following facts are known about the two reactions: . reaction 1 is endothermic and reaction 2 is exothermic. if a reaction vessel is charged (filled) with a and b , then at first d is produced faster than c. use these facts to sketch a qualitative reaction energy diagram for both reactions. note: because these sketches are only qualitative, the energies don? t have to be exact. they only have to have the right relationship to each other. for example, if one energy is less than another, that fact should be clear in your sketch.