4fe + 3 o2 2 fe2 o3 in this chemical equation, why is the number of atoms the same on each side of the arrow? a. matter cannot be created or destroyed. b. chemical reactions produce new matter. c. chemical reactions reduce matter but create energy.

The graph indicates the running route for tobias. which best describes his run? from time 0 to 6, he went fast and then slowed down. from time 6 to 10, he was at his slowest. from time 12 to 14, he went very slow. from time 14 to 18, he went toward the starting point.