Question

laboratory layout. stations a, b, and c are fume hoods. stations d, e, f, g, and h are gas chromatographs. a science teacher needs her class to complete an experiment that uses a gas chromatograph. the class will have access to stations d and e but will not have access to stations a, b, or c. from which experiment(s) can the teacher choose? a. 2 and 4 b. 3, 4, and 5 c. 4 only d. 4 and 5 only

Explanation:

Step1: Identify required station - gas chromatograph

The experiment needs to use a gas chromatograph. Stations D, E, F, G, and H are gas chromatographs and the class has access to D and E.

Step2: Analyze each option

• Option A: 2 and 4 - We don't know if these experiments can be done with just D and E access.
• Option B: 3, 4, and 5 - Since we don't have information ruling them out and they are potential candidates for experiments using gas - chromatographs accessible to the class.
• Option C: 4 only - Limiting to just 4 is not conclusive as other experiments might also work.
• Option D: 4 and 5 only - Similar to option C, not considering all possibilities. Without more information about the individual experiments, we assume the teacher can choose from experiments that can use the available gas - chromatographs (D and E). So 3, 4, and 5 are possible choices.

Answer:

B. 3, 4, and 5