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The graph shows what happened to potato cylinders in salt solutions of different strength.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
The graph shows what happened to potato cylinders in salt solutions of different strength.
- In which solutions did the potato gain mass?
- Which solution has the same concentration as the potato cells?
- About what was the change in mass in the solution with of salt in 100 mL?
Need a reminder? The key ideaShow
Where the change in mass is zero, the solution has the same concentration as the potato cells.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. Gain. In the solutions with less than about of salt in 100 mL, where the line is above zero.
Step 2. The same concentration. Where the line crosses zero, at about in 100 mL.
Step 3. At 0.8 g. The graph reads about : the potato lost water.
Answer: below about 0.5 g; about 0.51 g; about .
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