When iron is burned, it combines with oxygen to form iron oxide. the table below shows the densities of all of these substances.

substance iron
oxygen
iron oxide
density
(g/cm3) 7.9 1.3 × 10-3 5.2
based on the information from the data table, which of these is a correct conclusion about the burning of iron?

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.

d) a person who learns about the world by observing it.

explanation:

scientist are people who discover why and how things are done and made in the world.