Question

identify and write the name of a reactant in the given reaction 2Mg+o2 2mg0+energy

Answer 1

heat energy its right

Answer 2

2Mg + O2 ------) 2MgO + heat (Energy)
it is a exothermic reaction/oxidation/combustion reaction in which Mg reacts with oxygen or Mg is heated in presence of Oxygen to give 2MgO and heat which is a type of energy..