Determine the electrochemical potential and the free-energy change for a system where a solution of 0.1 M Mn2 at pH 1 is shaken in air at 0.2 bar pressure of O2, resulting in produc- tion of MnO2 (s), with the reduction of the oxygen to water. If the pH is held constant at 1 and the oxygen pressure at 0.2 bar, what will be the equilibrium concentration of Mn2 in the presence of excess MnO2 (s)

Problem page combustion of hydrocarbons such as pentane ( c5 h12 ) produces carbon dioxide, a "greenhouse gas." greenhouse gases in the earth's atmosphere can trap the sun's heat, raising the average temperature of the earth. for this reason there has been a great deal of international discussion about whether to regulate the production of carbon dioxide.(a) write a balanced chemical equation, including physical state symbols, for the combustion of liquid pentane into gaseous carbon dioxide and gaseous water. (b) suppose 0.350 kg of pentane are burned in air at a pressure of exactly 1 atm and a temperature of 20.0 degree c. calculate the volume of carbon dioxide gas that is produced.be sure your answer has the correct number of significant digits.