Jack and his lab partner did an experiment on the results of heating different combinations of chemicals on a hot plate. He performed four trials, each combining two different chemicals. Jack recorded several observations from the experiment. Which of his observations was a qualitative result?
A.
The chemicals combined in trial one turned blue when heated.
B.
The chemicals combined in trial three had a volume of 200 mL before heating.
C.
The product of the fourth trial was a liquid with a volume of 150 mL.
D.
The product of the second trial was a solid with a mass of 50g.

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 answer your looking for is c).

answerambulatory;