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Questions and Answers
What is the balanced chemical equation for the reaction between sodium and water?
What is the balanced chemical equation for the reaction between sodium and water?
- 2Na + 2H2O -> 2NaOH + H2 (correct)
- Na + H2O -> NaOH + H2
- 2Na + 2H2O -> 2NaH + O2
- 2Na + H2O -> 2NaOH + H2
What type of reaction occurs when methane (CH4) undergoes combustion?
What type of reaction occurs when methane (CH4) undergoes combustion?
- Synthesis reaction
- Single displacement reaction
- Combustion reaction (correct)
- Decomposition reaction
In the reaction 2H2 + O2 -> 2H2O, what is the stoichiometric coefficient for oxygen (O2)?
In the reaction 2H2 + O2 -> 2H2O, what is the stoichiometric coefficient for oxygen (O2)?
- 1
- 4
- 3
- 2 (correct)
What happens to mass during a chemical reaction?
What happens to mass during a chemical reaction?
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