An investigator measured the water potential of sweet potato (Ipomoea batatas) tissue by incubating uniform cylinders of the tuber in various concentrations of sodium chloride solution.
For one sweet potato cylinder incubated in a 0.2 mol dm−30.2\text{ mol dm}^{-3}0.2 mol dm−3 sodium chloride solution:
Calculate the percentage increase in mass of this sweet potato cylinder.
Use the equation: percentage increase in mass=increase in massstarting mass×100\text{percentage increase in mass} = \frac{\text{increase in mass}}{\text{starting mass}} \times 100percentage increase in mass=starting massincrease in mass×100