Which unknown solution contains the highest concentration of sucrose? 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.
Unknown Percent Change in Mass Percent Change in Mass Percent Change in Mass
Group 1 Group 2 Group 3
1 6.6 7.8 7.5
2 3.1 3.7 2.9
3 -2.7 -3.5 -2.5
4 0.7 0.5 1.1
5 -11.6 -12.3 -12.6
6 -5.2 -6.2 -4.9
Which unknown solution contains the highest concentration of sucrose?
a) 3
b) 4
c) 5
d) 1