A container contains helium, neon, argon and krypton. Calculate the total pressure if P neon = 90. kPa, Pargon = 20. kPa, P krypton = 50. kPa & P helium = 10. kPa. a. 10 kPa
b. 160 kPa
c. 170 kPa
d. 30 kPa

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