Mistry- Unit 5 Test 1 33 of 50 Which mathematical relationship describes how the heat of fusion (AH fus) and the heat of solidification (AH solid) are related?

∆H fus = -∆H solid

Explanation:

Enthalpy of melting (fusion) is the enthalpy change when a substance melts. It is always endothermic (i.e heat is being absorbed). So ∆H is positive.

Enthalpy of freezing (solidification) is the enthalpy change when a substance freezes. It is negative that of melting.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.