Before beginning a refrigerant recovery procedure, it is ALWAYS necessary to; A) allow the appliance to stabilize at room temperature.
B) know the type of refrigerant that is in the system.
C) remove the appliance to an outdoor location.
D) disconnect the appliance from its power source.

did anyone actually do this? like if anyone has submitted this i rly need .

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.

answerca air mass;