C3H8 + 3O2 → 3CO2 + 4H2 How many moles of oxygen are necessary to react completely with 4.0 moles of propane (C3H8)?

d: the voltage of the secondary coil is less than that of the primary coil.

im not suree sorry if wrong

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.