Convert 653 mm Hg to SI units.
A. 101,325 Pa
B. 87,058 Pa
C. 8700 Pa
D. 90 kPa

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

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.