For the following reaction, identify the atom oxidized, the atom reduced, the oxidizing agent, the reducing agent, the oxidation half-reaction, and the reduction half-reaction.
Mg + HCl MgCl2 + H2

Fe + V2O3 Fe2O3 + VO

KMnO4 + KNO2 + H2SO4 MnSO4 + H2O + KNO3 + K2SO4

K2Cr2O7 + SnCl2 + HCl CrCl3 + SnCl4 + KCl + H2O

KMnO4 + NaCl + H2SO4 Cl2 + K2SO4 + MnSO4 + H2O + Na2SO4

K2Cr2O7 + H2O + S SO2 + KOH + Cr2O3

KClO3 + C12H22O11 KCl + H2O + CO2

H2C2O4 + K2MnO4 CO2 + K2O + Mn2O3 + H2O

Mn(NO3)2 + NaBiO3 + HNO3 HMnO4 + Bi(NO3)3 + NaNO3 + H2O

H2C2O4 + KMnO4 CO2 + K2O + Mn2O3 + H2O

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.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.

i think tornado but not 100%