Chapter Test \( \mathbf{B} \) (continued) 8 \( \begin{array}{l}\text { 9. A scientist needs } \frac{7}{12} \text { liter of sulfuric acid to perform an experiment. She has } \\ \frac{11}{12} \text { liter of nitric acid. She has } \frac{5}{6} \text { liter more nitric acid than sulfuric acid. Can she } \\ \text { perform the experiment? }\end{array} \)
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To determine if the scientist can perform her experiment, we first need to assess how much nitric acid she has. The scientist requires \(\frac{7}{12}\) liter of sulfuric acid. Since she has \(\frac{5}{6}\) liter more nitric acid than sulfuric acid, we convert \(\frac{5}{6}\) to have a common denominator with \(\frac{7}{12}\). The fraction \(\frac{5}{6}\) is equivalent to \(\frac{10}{12}\). Therefore, the amount of nitric acid she has is \(\frac{7}{12} + \frac{10}{12} = \frac{17}{12}\) liters. Since \(\frac{17}{12}\) liters of nitric acid is greater than \(\frac{11}{12}\) liters (the quantity she has), she indeed has enough nitric acid to proceed with her experiment!