One possible strategy to synthesize curcumin is to carry out a double aldol condensation using vanillin (2.0 eq) and acetylacetone (1.0 eq). In reality, this synthesis does not work. But why

Ineed this awnser fast select the correct answer. this chemical equation represents the burning of methane, but the equation is incomplete. what is the missing coefficient in both the reactants and the products? ch4 + → co2 + a. 0 b. 1c. 2d. 3 e. 4