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.

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

Answer asap need it by wednesday morning calculate the ph of 0.02m hcl best answer will be brainliest

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?