Balancing equations

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What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)? __Na + __H₂O --> __NaOH + __H₂

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2,2 --> 2,1

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What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)? __Ca + __H₂O --> __Ca(OH)₂ + __H₂

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1,2 --> 1,1

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What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__CO + __Fe₂O₃--> __Fe + __CO₂
Options: 3,1 --> 2,3, 3,2 --> 1,1, 3,2 --> 2,4, 3,2 --> 2,1

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3,1 --> 2,3

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What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)? __CH₄ + __O₂ --> __CO₂+ __H₂O
Options: 2,1 --> 2,1, 1,2 --> 1,1, 1,2 --> 1,2, 1,2 --> 2,1

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1,2 --> 1,2

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What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__AgNO₃ + __H₂S --> __Ag₂S+ __HNO₃

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2,1 --> 1,2

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What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H₂ + __S --> __H₂S

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1,1 --> 1

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What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)? __H₂SO₃ + __KOH--> __H₂O+ __K₂SO₃

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1,2 --> 2,1

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What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__Al + __O₂--> __Al₂O₃

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4,3 --> 2

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What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)? __MnO₂ + __HCl --> __MnCl₂ + __H₂O + __Cl₂

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1,4 --> 1,2,1

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What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__FeCl₃ + __Ca(OH)₂ --> __Fe(OH)₃ + __CaCl₂

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2,3 --> 2,3