21. Which of the equations is balanced?

A) 2Li2O + H2O ⇒ 2LiOH

B) 3Fe + 3O2 ⇒ 2Fe2O3

C) 2N2 + O2 ⇒ 3N2O

D) 3Mg + N2 ⇒ Mg3N2

Question

Physics

Braxton Chen

9 February, 14:27

21. Which of the equations is balanced?

A) 2Li2O + H2O ⇒ 2LiOH

B) 3Fe + 3O2 ⇒ 2Fe2O3

C) 2N2 + O2 ⇒ 3N2O

D) 3Mg + N2 ⇒ Mg3N2

+1

Answers (1)

Know the Answer?

Selah Warren · Answer 1

The answer would be D

Because there are the same amount of elements on each side (3Mg on the left and 3 Mg on the right. Then 2 N on the left and 2 N on the right also)

21. Which of the equations is balanced?A) 2Li2O + H2O ⇒ 2LiOHB) 3Fe + 3O2 ⇒ 2Fe2O3C) 2N2 + O2 ⇒ 3N2OD) 3Mg + N2 ⇒ Mg3N2

21. Which of the equations is balanced?

A) 2Li2O + H2O ⇒ 2LiOH

B) 3Fe + 3O2 ⇒ 2Fe2O3

C) 2N2 + O2 ⇒ 3N2O

D) 3Mg + N2 ⇒ Mg3N2