1.17: percentage loss or gain of mass

In the earlier experiment, what graph is plotted?

Change in mass (%, in the y-axis) against concentration of sucrose (on the x-axis)

What does it mean when the plotted line crosses the horizontal line at 0% change in mass?

The sucrose concentration of the solution is equal to the concentration of the contents (cell sap) of the potato cells

How do you calculate percentage change in mass?

Initial mass-final mass/initial mass x 100

If the potato was 43.2g before and 36.8 after, what is its percentage change in mass?

43.2-36.8=6.4

6.4/43.2=0.148

0.148×100=14.8% decrease in mass