MathDB
2010 USNCO Local #7: Balancing an equation

Source:

November 21, 2012

Problem Statement

What is the coefficient for O2\text{O}_2 when the following reaction _As2S3+_O2→_As2O3+_SO2\_\text{As}_2\text{S}_3+\_\text{O}_2 \rightarrow \_\text{As}_2\text{O}_3+\_\text{SO}_2 is correctly balanced with the smallest integer coefficients?
<spanclass=′latex−bold′>(A)</span>5<spanclass=′latex−bold′>(B)</span>6<spanclass=′latex−bold′>(C)</span>8<spanclass=′latex−bold′>(D)</span>9 <span class='latex-bold'>(A)</span> 5 \qquad<span class='latex-bold'>(B)</span> 6 \qquad<span class='latex-bold'>(C)</span> 8 \qquad<span class='latex-bold'>(D)</span> 9 \qquad
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