activation energy start off chemical reaction
Answer:
solid change directly into a vapor in the process known simply as freezing
Cheetah who is running with speed of 80 miles per hour then it is his instantaneous speed becaue i shows as in per hour speed..... hope it helps
Answer:
c
Explanation:
hydrogen bonds are initially weak and collectively strong because they are partially positive ions
The answer is N2 + 3H2 yields 2NH3. The oxidation-reduction reaction means that there is electrons transfer during the reaction which means that the valence changed.
