Use Hess’s Law to calculate the heat of reaction, ∆HRXN, for the following chemical process: NO(g) + O(g) → NO2(g)

using the information given below:
NO(g) + O3(g) --> NO2(g) + O2(g) DeltaH = -198.9 kJ / mol
O3(g) --> O2(g) DeltaH = -142.3 kJ / mol
O2(g) --> 2 O(g) DeltaH = +495 kJ / mol

answer; natural resources;

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.