Question

based on the chemical equation, use the drop - down menu to choose the coefficients that will balance the chemical equation: ( )h₂o → ( )h₂ + ( )o₂

Explanation:

Step1: Analyze Oxygens

On the left (H₂O), O count is 1. On the right (O₂), O count is 2. To balance O, set H₂O coefficient to 2 (so O: 2×1 = 2, matching O₂'s 2).

Step2: Analyze Hydrogens

With H₂O coefficient 2, H count on left: 2×2 = 4. On the right (H₂), each H₂ has 2 H. So H₂ coefficient should be 2 (2×2 = 4), balancing H.

Step3: Verify Balanced Equation

Equation becomes \( 2\text{H}_2\text{O}
ightarrow 2\text{H}_2 + 1\text{O}_2 \) (O: 2=2, H: 4=4).

Answer:

First coefficient (H₂O): 2, Second coefficient (H₂): 2, Third coefficient (O₂): 1