A student investigated the effect of different concentrations of sucrose solution on the mass of sweet potato cylinders. The table below shows the results of the investigation after the cylinders were left in the solutions for 30 minutes.
| Cylinder | Concentration of sucrose solution (mol/dm3\text{mol/dm}^3mol/dm3) | Mass at start (g\text{g}g) | Mass after 30 minutes (g\text{g}g) | Change in mass (g\text{g}g) | Percentage (%) change in mass |
|---|---|---|---|---|---|
| A | 0.0 | 5.20 | 5.62 | +0.42 | +8.1 |
| B | 0.2 | 5.15 | 5.30 | +0.15 | +2.9 |
| C | 0.4 | 5.25 | 5.12 | -0.13 | -2.5 |
| D | 0.6 | 5.00 | 4.65 | -0.35 | -7.0 |
| E | 0.8 | 5.10 | 4.54 | -0.56 | YYY |
Based on the measurements in the table, what was the resolution of the balance used?
Calculate the value of YYY to 111 decimal place. Use the formula: Percentage change in mass=change in massmass at start×100\text{Percentage change in mass} = \frac{\text{change in mass}}{\text{mass at start}} \times 100Percentage change in mass=mass at startchange in mass×100
Estimate the concentration of sucrose solution (in mol/dm3\text{mol/dm}^3mol/dm3) that would result in no change in mass of the sweet potato cylinders.