Question

n by indicating the number of each species in the appropriate blanks. for this exercise, indicate coefficie ft column to the appropriate blanks in the chemical equations on the right. make certain the chem 3 fe (s) + 2 h₂o (l) → 1 fe₃o₄ (s) + 2 h₂ (g)

Explanation:

Step1: Check Fe balance

Left: 3 Fe; Right: 1×3=3 Fe (balanced).

Step2: Check O balance

Left: 2×1=2 O; Right: 1×4=4 O (unbalanced).

Step3: Adjust H₂O coefficient

Set H₂O coefficient to 4: Left O=4×1=4, matching Right.

Step4: Check H balance

Left H: 4×2=8; Right H: 2×2=4 (unbalanced). Adjust H₂ to 4: 4×2=8 (balanced).

Step5: Verify all elements

Fe: 3=3; O:4=4; H:8=8 (all balanced).

Answer:

3 Fe(s) + 4 H₂O(l) → 1 Fe₃O₄(s) + 4 H₂(g)