Which of the following explains how one of the postulates in John Dalton's atomic theory later became robust knowledge? Some scientists found that some atoms of a particular element have different number of neutrons.

Various scientists found that atoms combine in simple whole number ratios to form compounds.

Some scientists found that atoms consist of subatomic particles with varying mass and charge.

Various scientists found that sometimes a fraction of an atom can take part in a chemical reaction.

elements make up everything, and they combine to make compounds.

the answer is c

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.