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∘

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

High-pressure liquid chromatography (hplc) is a method used in chemistry and biochemistry to purify chemical substances. the pressures used in this procedure range from around 500 kilopascals (500,000 pa) to about 60,000 kpa (60,000,000 pa). it is often convenient to know the pressure in torr. if an hplc procedure is running at a pressure of 1.03×108 pa , what is its running pressure in torr?