Questions: Lithium combines with oxygen to form lithium oxide. Write the balanced chemical equation for this reaction. What is the coefficient for lithium? 4 3 2 1 None of the above.

Lithium combines with oxygen to form lithium oxide. Write the balanced chemical equation for this reaction. What is the coefficient for lithium? 4 3 2 1 None of the above.
Transcript text: Lithium combines with oxygen to form lithium oxide. Write the balanced chemical equation for this reaction. What is the coefficient for lithium? 4 3 2 1 None of the above.
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Solution

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Solution Steps

Step 1: Identify the reactants and products

The reactants in this reaction are lithium (Li) and oxygen (O\(_2\)). The product formed is lithium oxide (Li\(_2\)O).

Step 2: Write the unbalanced chemical equation

The unbalanced chemical equation for the reaction is: \[ \text{Li} + \text{O}_2 \rightarrow \text{Li}_2\text{O} \]

Step 3: Balance the chemical equation

To balance the equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation.

  1. Start with lithium (Li):

    • There are 2 lithium atoms in Li\(_2\)O, so we need 2 lithium atoms on the reactant side.
    • This gives us: \( 2\text{Li} + \text{O}_2 \rightarrow \text{Li}_2\text{O} \)

  2. Check oxygen (O):

    • There are 2 oxygen atoms in O\(_2\) and 1 oxygen atom in Li\(_2\)O.
    • Since we already have 2 lithium atoms balanced, the oxygen atoms are also balanced.

The balanced chemical equation is: \[ 4\text{Li} + \text{O}_2 \rightarrow 2\text{Li}_2\text{O} \]

Step 4: Determine the coefficient for lithium

The coefficient for lithium (Li) in the balanced equation is 4.

Final Answer

\(\boxed{4}\)

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