Observe the diagram given. Trinity starts at position A, walks along the bold path and finishes at position B. She arrives at position B in
30 minutes (1800 seconds). Each Square is 1 m along its edge.
Use the diagram in answering the 2 questions below DON'T
FORGET YOUR UNITS.

a. a primary source combines several different accounts of an event. b. a primary source generally benefits from having been written after an event.

explanation:

the answer is either b or c

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.