What does a reaction energy diagram represent ? A. The changes in concentrations with time
B. The changes in energy during reaction reaction
C. The changes in phases with temperature
D. The changes in the reaction rate with time

How much energy moves onto the next level, in an energy pyramid

Stage in which a star’s outer layers have started to cool and grow outward?

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive