Chapter 7 Worksheet #1: Balancing Chemical Equations, featuring 21 practice problems for students to balance chemical reactions.

Final Answer:
1) 1 N₂ + 3 H₂ → 2 NH₃
2) 2 KClO₃ → 2 KCl + 3 O₂
3) 2 NaCl + F₂ → 2 NaF + Cl₂
4) 2 H₂ + O₂ → 2 H₂O
5) Pb(OH)₂ + 2 HCl → 2 H₂O + PbCl₂
6) 2 AlBr₃ + 3 K₂SO₄ → Al₂(SO₄)₃ + 6 KBr
7) CH₄ + 2 O₂ → CO₂ + 2 H₂O
8) 2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O
9) C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O
10) FeCl₃ + 3 NaOH → Fe(OH)₃ + 3 NaCl
11) 4 P + 5 O₂ → 2 P₂O₅
12) 2 Na + 2 H₂O → 2 NaOH + H₂
13) 2 Ag₂O → 4 Ag + O₂
14) S₈ + 8 O₂ → 8 SO₂
15) C₆H₁₂O₆ + 6 O₂ → 6 CO₂ + 6 H₂O
16) 2 K + MgBr₂ → 2 KBr + Mg
17) 2 HCl + CaCO₃ → CaCl₂ + H₂O + CO₂
18) HNO₃ + NaHCO₃ → NaNO₃ + H₂O + CO₂
19) 2 H₂O + O₂ → 2 H₂O₂
20) 2 NaBr + CaF₂ → 2 NaF + CaBr₂
21) H₂SO₄ + 2 NaNO₂ → 2 HNO₂ + Na₂SO₄