Chemistry final help ya'll

the question is in the picture

-20kJ/mol minus 66kj/mo

Explanation:

2NO2 = N2O4

Delta H 2NO2 = +66 kj/mol

Delta H N2O4 = -20kJ/mol

Change in entropy = Change in heat of a system

Delta H = Hfinal minus Hinital

So in our case it would be

-20kJ/mol minus 66kj/mol

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.