According to becquerel, what created the image on photographic film when it was placed in a drawer with uranium salt crystals?

Radiation emitted by Uranium

Explanation:

Henri Becquerel is credited for his discovery of radioactivity. The image on the photographic film when it was placed in a drawer with uranium salt crystal is due to the emission of radiation by the uranium nucleus. This process is termed as natural radioactivity since no external source of radiation was involved.

hloride, what is the mass of calcium in

explanation:

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.