A 4. 40-g piece of solid co2 (dry ice) is allowed to vaporize (change to co2(g)) in a balloon. The final volume of the balloon is 1. 00 l at 300. K. What is the pressure of the gas?.

In a particular chemical reaction, the energy of the reactants is 30 kj and the energy of the products is 5 kj. 
 the maximum energy of the system is 40 kj. sketch a potential energy diagram for this reaction. make sure to label the energy of the reactants, the energy of the products, the activation energy, and the enthalpy change for the reaction.