Why should scientists study the effects of chemicals on the environment?
) A. To provide environmental chemists with jobs
B. To prove that all chemicals harm the environment
C. To identify harmful chemicals that need to be regulated
D. To show all of the ways chemicals can help the environment

the solar system used to have much dust particles option no d

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.