A 1.20 L weather ballon on the ground has a temperature of 25 degrees C and is at atmospheric pressure. When it rises to an elevation where the pressure is 0.720atm, and the new volume is 1.80 L, what is the temperature of the air at this elevation?

Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products