Question

5. What are the coefficients when the equation below is balanced?

_H₂+_0₂→--H₂O

O 1,1,2
O 4,3,1
O 2,1,2
0 2,2,1

Answer 1

C.) 2,1,2

Step-by-step explanation:

You have to balance the equation by getting the number of elements on the left and right side to equal. Before balancing there is one more oxygen on the left side than the right side. You have to change the coefficient in front of H2O to fix this, and that means adding a "2" in front of the H2 to get that to equal as well.

You end up with 2H₂+10₂→ 2H₂O