Four solid spheres are made of the materials listed below. determine the maximum diameter of each so that the lumped capacitance model can be used to find t(t) for heating each in an oil bath with h=159 w/ m k . a. aisi 316 stainless steel b. copper c. cement mortar, table a.3 d. expanded polystyrene molded beads (styrofoam), table a.3 note: assume constant k for the solids at 300 k.

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.