The chemical equation below represents an unbalanced chemical reaction: Fe + 0, → Fe, o,
When the equation is balanced, what coefficient is needed for Fe2O3?
A
1
B
2
С
3
D
4

2

Explanation:

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).