Calculate the equilibrium constant, k, for the reaction shown at 25 °c. fe3 (aq) b(s) 6h2o(l)⟶fe(s) h3bo3(s) 3h3o (aq) the balanced reduction half‑reactions for the equation and their respective standard reduction potential values (e∘) are fe3 (aq) 3e−⟶fe(s)h3bo3(s) 3h3o (aq) 3e−⟶b(s) 6h2o(l)e∘e∘

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.