An ideal gaseous reaction (which is a hypothetical gaseous reaction that conforms to the laws governing gas behavior) occurs at a constant pressure of 45.0 atm and releases 68.0 kj of heat. before the reaction, the volume of the system was 6.40 l . after the reaction, the volume of the system was 2.80 l . calculate the total internal energy change, δe, in kilojoules.

To calculate the total internal energy change in kilojoules we need to calculate U which is equal to q + w . We know that w = P delta V where P is the pressure and V is the volume then we have that w = 45 atm * ( 6.40L - 2.80L) = 180 atm * L . Then we know that 1 atm * L = 101.325 J then we have that w = 180 * 101.325 J = 18,238.5 J . Then we have that 1 kJ = 10^3 J . Then w = 18.2385 kJ . Then we have that U = 18.238 - 68.0 kJ = -49.7615 kj since heat was released. Thus we have that the total internal energy change was -49.7615.

Herbivores, carnivores, omnivores, decomposers, herbivores

They carry out the exchange of gases as we breathe ( oxygen and carbon dioxide).