Question

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how many oxygen atoms are on the left side of the following chemical equation?
pb(no₃)₂ + 2naoh → pb(oh)₂
□ oxygen atoms
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Explanation:

Step1: Analyze \( \text{Pb(NO}_3\text{)}_2 \)

In \( \text{Pb(NO}_3\text{)}_2 \), the subscript of \( \text{NO}_3 \) is 3, and it is multiplied by 2 (from the outer subscript). So oxygen atoms here: \( 3\times2 = 6 \).

Step2: Analyze \( 2\text{NaOH} \)

In \( \text{NaOH} \), there is 1 oxygen atom. The coefficient is 2, so oxygen atoms here: \( 1\times2 = 2 \).

Step3: Sum the oxygen atoms

Total oxygen atoms on the left: \( 6 + 2 = 8 \).

Answer:

8