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What coefficients would balance the following equation? __Al + __O2 → __Al2O3 - Answer-D. 4Al + 3O2 → 2Al2O3 What coefficients would balance the following equation? __C2H6 + __O2 → __CO2 + __H2O - Answer-C. 2C2H6 + 7O2 → 4CO2 + 6H2O Classify the chemical reaction shown here: Mg + H2SO4 → MgSO4 + H2 - Answer-B. Single replacement Classify the chemical reaction shown here: CaCO3 → CaO + CO2 - Answer-C. Decomposition Which of the following is an example of a double replacement reaction? A. 3Fe + 2O2 → Fe3O4 B. BaCl2 + K2CO3 → BaCO3 + 2KCl C. NiCO3 → NiO + CO2 D. Cl2 + 2NaBr → 2NaCl + Br2 - Answer-B. BaCl2 + K2CO3 → BaCO3 + 2KCl
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GIZMO: Balancing Chemical
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