In a science lab, burning steel wool creates only iron oxide. What must be true? A
The reaction of burning steel wool can sometimes create carbon monoxide.

B
The reaction of burning steel wool will sometimes create iron oxide and water.

C
The reaction of burning steel wool is not endothermic or exothermic.

D
The reaction of burning steel wool always creates iron oxide.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

answersilicon (si); oxygen (o);