A redox reaction, short for "reduction-oxidation" reaction, is a type of chemical reaction in which there is a transfer of electrons between two substances. These reactions involve changes in the oxidation states (or oxidation numbers) of the participating atoms or ions.

Multiplication of \((0.0043)(0.821)(298)\) is \(1.0520\), Which could be written as \(1.05\) and by rounding off \(1.1\).