Three Lab Groups Carried Out an Experiment to Identify the Concentration

question 58

Multiple Choice

Three lab groups carried out an experiment to identify the concentration of sucrose in six solutions. Each unknown solution (1-6) contained one of the following sucrose concentrations: 0.0 M, 0.2 M, 0.4 M, 0.6 M, 0.8 M, and -1.0 M. Cubes of sweet potato (1 cm3) were soaked for 24 hours in each solution and weighed to determine the change in mass. Each data entry represents the average of three sample replicates expressed as percent change in mass following a 24-hour soak in the unknown solutions. From the data provided, which unknown solution has a molarity that most closely reflects the molarity of sweet potato cells?

• A) 2
• B) 3
• C) 4
• D) 5

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Definitions:

Data

Information collected for reference or analysis.

Inference

The process of using data analysis to deduce properties of an underlying distribution of probability; drawing conclusions about populations based on sample data.

Optimization Models

Mathematical models that are designed to find the best possible solution or outcome from a set of parameters or constraints.

Prescriptive Analytics

The set of analytical techniques that yield a best course of action.