-roovy (4) 22,000 J
4
5. Two samples of gold that have different
temperatures are placed in contact with
one another. Heat will flow spontaneously
from a sample of gold at 60°C to a sample
of gold that has a temperature of
(1) 50°C
(3) 70°C
(2) 60°C
(4) 80°C
5

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.