Water gas, mixturee of h2 and co, is an important industrial fuel produced by the reaction of steam with red hot cake, essentially pur carbon: c + h2o ? co + h2
(a) assuming that coke has the same enthalpy of formation as graphite, calculate ho298 for the reaction.

Explanation:

The formula for calculating the enthalpy change of a reaction by using the enthalpies of formation of reactants and products is

                          C(s) + H₂O(g) ⇌ CO(g) + H₂(g)

ΔH°f/kJ·mol⁻¹:      0      -241.8      -110.5        0

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.

points

explanation: