5. this graph shows the energy changes during the progress of a reaction involving two molecules. explain what is happening or what the state of the reaction is at a, b, c, and d. is this an exothermic or an endothermic reaction?

Jewelweed, a flowering plant, has seed pods that burst open when touched and forcefully eject their seeds. these structures are favorable because they a. can cause genetic changes to occur. b. prevent germination within the seed pod. c. aid in the dispersal of the species. d. attract insects that aid in pollination.

What is the empirical formula of vanadium 1 oxide given that 20.38 grams of vandium combines with oxygen to form 23.58 grams of the oxide

Can someone me with questions 15 to 17 plz.