1. Use standard enthalpies of formation to calculate ΔH∘rxn for the following reaction. 2NaHCO3(s)→Na2O(s) + 2CO2(g) + H2O(g)2. Use standard enthalpies of formation to calculate ΔH∘rxn for the reaction.CO(g) + H2O(g)→H2(g) + CO2(g)3. Use standard enthalpies of formation to calculate ΔH∘rxn for the reaction.3NO2(g) + H2O(l)→2HNO3(aq) + NO(g)4. Use standard enthalpies of formation to calculate ΔH∘rxn for the reaction.C6H12O6(s) + 6O2(g)→6CO2(g) + 6H2O(g)

The two species of pine trees have more characteristics in common than the pine trees and the palm trees.

Explanation:

A specie is a group of organisms with similar characteristics and can interbreed to produce viable offspring. The two pine tree have similar characteristics and they can interbreed to produce young pines since they are of the same species.

The palm tree is completely different and not of the same specie with the pines. This suggests that both pine and palm tree cannot interbreed to produce a new type.