Figure 1 shows a reaction profile. Figure 1
B
C
reactants
Energy
A
products
D
Progress of reaction
which letter shows the activation energy for the reaction

Answerit curves up and levels out.explanationwe assume that the container contains absolutely no ammonia to begin with as it states that "nitrogen gas and hydrogen gas" react to "produce ammonia."at dynamic equilibrium, the product and reactant concentrations are equal.this means that, starting from a concentration of zero, [nh₃] must curve "up" from zero and then level out to a constant concentration.

Ithink iit might be

Ijust took the quiz. their is no coefficient needed. : )