1. 1  an implement, such as a hammer, saw, or spade, that is used by hand. 2  a power-driven instrument; machine tool. ( 3 in combination): a toolkit.
The standard enthalpy of combustion is the enthalpy change when one mole of a reactant completely burns in excess oxygen under standard thermodynamic conditions (although experimental values are usually obtained under different conditions and subsequently adjusted).he standard enthalpy of combustion is the enthalpy change when one mole of a reactant completely burns in excess oxygen under standard thermodynamic conditions (although experimental values are usually obtained under different conditions and subsequently adjusted).
The generic algebraic equation for a combustion reaction is: AB + oxygen â common oxide of A and B. In a complete combustion reaction, a reactant burns with oxygen to produce the most common oxides of the elements making up the substance that is burned.The combustion of methane means that it is possible to burn it. Chemically, this combustion process consists of a reaction between methane and oxygen in the air.he generic algebraic equation for a combustion reaction is: AB + oxygen â common oxide of A and B. In a complete combustion reaction, a reactant burns with oxygen to produce the most common oxides of the elements making up the substance that is burned.