Determine ∘ , Δ∘ , and K for the overall reaction from the balanced half-reactions and their standard reduction potentials. 2Co3+H3AsO3+H2O ↽−−⇀ 2Co2++H3AsO4+2H+Co3+e−↽−−⇀ Co2+ ∘=1.92H3AsO4+2H+2e−↽−−⇀ H3AsO3+H2O∘=0.575∘= ?K= ?Δ∘= ?Is the overall reaction spontaneous as written? not spontaneous spontaneousDetermine ∘E∘, Δ∘ΔG∘, and KK for the overall reaction from the balanced half-reactions and their standard reduction potentials.4Fe3++2H2O↽−−⇀ 4Fe2++O2+4H+Fe3++e−↽−−⇀ Fe2+ ∘=0.771 V1/2O2+2H++2e− ↽−⇀ H2O∘=1.229V∘=K=Δ∘=Is the overall reaction spontaneous as written?

A. spontaneous

B. not spontaneous

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .

Which of these natural resources is non-renewable a. corn b. wind c. geothermal d. natural gas