University:
Concordia University Wisconsin
Course:
CHEM 1414 | General Chemistry I
Academic year:

2020
Views:

427

Pages:

2
Author:

Maverick Martin

NAME: _______________ BLOCK: _____; DATE: _______ CHEM. BALANCING CHEMICAL EQUATIONS #1 PART I - Sketch the atoms or molecules indicated by each formula: 4Hg [Four Hg atoms circled] 2H₂ [Two H₂ molecules circled] 2NaOH [Two NaOH molecules, Na, O, and H labeled, each circled] 2Ca(NO₃)₂ [Two Ca(NO₃)₂ molecules, Ca, N, and O labeled, each circled] 3Ag₂O [Three Ag₂O molecules, Ag and O labeled, each circled] PART II - Determine how many atom of each element are present in each formula: 4H₂SO₄ H-8 S-4 O-16 3Pb(OH)₂ 3Pb 6O 6H 2Ba(CO₃)₂ 2Ba 4C 12O 5Al₂(SO₄)₃ 10 Al 15 S 60 O PART III - Balance each equation __CaO + 2 HCl ----> CaCl₂ + ___H₂O __Br₂ + 2 KI ----> ___I₂ + 2 KBr Copper I oxide + hydrogen (g) ----> copper + water Cu₂O + H₂ → 2Cu + H₂O __Ca + 2 H₂O ----> Ca(OH)₂ + __H₂ magnesium + hydrogen chloride ----> magnesium chloride + hydrogen (g) Mg + 2 HCl → MgCl₂ + H₂ barium chloride + magnesium sulfate -----> barium sulfate + magnesium chloride BaCl₂ + MgSO₄ → BaSO₄ + MgCl₂ 8 H₂S -----> 8 H₂ + ___S₈ 2 PbS + __O₂ -----> 2 Pb + 2 SO Lead II nitrate ----> lead II oxide + nitrogen dioxide + oxygen (g) 2 Pb(NO₃)₂ → 2PbO + 4NO₂ + O₂ 4 NH₃ + 5 O₂ -----> 4 NO + 6 H₂O Silver sulfate + aluminum chloride -----> silver chloride + aluminum sulfate 3Ag₂SO₄ + 2AlCl₃ → 6AgCl + Al₂(SO₄)₃ 2 C₄H₁₀ + 13 O₂ -----> 8 CO₂ + 10 H₂O Sodium hydroxide + copper II sulfate -----> sodium sulfate + copper II hydroxide 2 NaOH + CuSO₄ → Na₂SO₄ + Cu(OH)₂ Potassium phosphate + magnesium sulfate -----> magnesium phosphate + potassium sulfate 2 K₃PO₄ + 3 MgSO₄ → Mg₃(PO₄)₂ + 3K₂SO₄ __ Al₄C₃ + 12 H₂O -----> 4 Al(OH)₃ + 3 CH₄