Use each equation to predict whether the relative entropy change is s(products) > s(reactants) or s(products) < s(reactants) and whether δs > 0 or δs < 0 for the chemical reaction represented. justify your answer in each case.
a. 2nh3(g)→n2(g) + 3h2(g)
b. 2al(s) + 3f2(g)→2alf3(s)

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.

What is the molecular weight of copper