Identify the following reactions as exothermic or endothermic. YOU MUST USE THE FOLLOWING VOCABULARY WORDS in your answer
endothermic/exothermic (choose one)
Reactant
.
.
Thermal kinetic energy
Product
Chemical potential energy
1. CH. - 2C + 2H2 + heat
This is an
I know this because
2. 2Fe + 3C02 + 26.8kJ - Fe, O3 + 3CO
This is an
I know this because
3. 2HgO - 2Hg + O2
ΔΗ= +181 kJ
This is an
I know this because

what is the question here. i think you messed up.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.

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.