Unless you are explicitly told otherwise, only pour down lab sinks.

Unless you are explicitly told otherwise, only pour      down the lab sinks.

It has to be three elements long, using the initial for the element. Looking at the periodic table of elements, we can find the following elements.

This leads us to the

W- Tungsten

AT- Astatine

ER- Erbium

W-AT-ER

Water!

I hope this helps! :)

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.

the correct answer to this question is 2