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Initial Volume
Sucrose %
Prediction: Will water move in or out?
Final Volume
Bag #1 10 mL
30%
In
14
Bag #2 10 mL
15%
12
Bag #3 10 mL
3%
10
Bag #4 10 mL
Out
8
(Additional Info: bag #1 = yellow, bag #2 = red, bag #3 = blue, bag #4 = green. Bags #1-3 are placed in beaker #2 and bag #4 is placed in beaker #1.)
1. Complete each of the statements below to identify whether the solution inside each bag washypertonic, hypotonic or isotonic (type one of these three terms in the blanks provided) in comparison to the beaker solution into which it was placed:
The 30% sucrose solution in Bag #1 was
relative to the 3% sucrose solution in Beaker #1.
The 15% sucrose solution in Bag #2 was
The 3% sucrose solution in Bag #3 was
The 3% sucrose solution in Bag #4 was
relative to the 30% sucrose solution in Beaker #2.
2. Which bag increased the most in volume? Why?
3. What does this tell you about the relative tonicity between the contents of the bag and the solution in the beaker?
4. What would happen if bag 1 is placed in a beaker of distilled water?
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