Is the following reaction endothermic or exothermic? Why? 2NO2(g) --> O2(g) + 2NO(g) AH = +28 kJ O Exothermic because enthalpy is positive O Exothermic because enthalpy is negative O Endothermic because enthalpy is positive OEndothermic because enthalpy is negative​

solute : a solute is a substance that is dissolved in another substance is known as a solvent. it is mixed with a special mixture know as homogeneous mixture.

solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.