Consider the following energy diagram. how much is the activation energy? 2.4 kcal/mole 14.4 kcal/mole 43.8 kcal/mole

43.8 kcal/mole

Explanation:

Activation energy is the minimum energy required by the reactants to form the activated complex, the activated complex then gets converted to products. According to the given graph the reactants required 43.8 kcal of energy to form the activated complex.The lower the activation energy the faster the reactants will get converted to products and vice versa.  

gravity causes stares to cluster i think so

the answer is a and have a great day