12. A car is on the 5th floor of a parking lot. the mass of the car is 900kg and the height of each floor of the parking lot 2.5m a) when it is parked in the parking space.
at a given moment, the car begins to descend towards the exit, with a constant speed of 20 km / h.
b) Calculate its mechanical energy passes through the 3rd floor of the car park
c) Calculate its mechanical energy at the moment it reaches the output

personal, she chose to do it.

definition

                    entropy is a measure of the randomness or the extent of disorder of a chemical process.

                      enthalpy is a measure of the heat change of a reaction occurring at a constant pressure.

measurement units:

                        entropy is measured in joule per kelvin (jk⁻¹)   whereas enthalpy is measured in joule per mole (jmol⁻¹)

requirements:

                            entropy has no requirements or limits, and its change is measured by the division between the heat change of the chemical process and the temperature.

                              in contrast, enthalpy can only be related to the heat change of the reaction under standard conditions.