Answer:
increase
Explanation:
because in endothermic reaction heat is absorbed
Magnetizing steel is a physical change, not a chemical change.
Answer: d) -705.55 kJ
Explanation:
Heat of reaction is the change of enthalpy during a chemical reaction with all substances in their standard states.

Reversing the reaction, changes the sign of 


On multiplying the reaction by
, enthalpy gets half:


Thus the enthalpy change for the given reaction is -705.55kJ