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Topic: Science
Number of pages / Number of words: 5 / 1346
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Place tube 1 in a beaker of ice water; place tube 2 in a beaker of water at room temperature, and tube 3 in a beaker of boiling water. Wait 10 minutes for the sucrose solution in the tubes to equilibrate with the temperature of the water in the beakers.

3. After 10 minutes, add 0.5ml of 25 percent invertase (an enzyme derived from yeast) solution to each tube (swirl the invertase solution before use)...


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Cover each tube and invert it several times to mix the contents during the 5 minutes.

4. After 5 minutes add 1ml of Benedict's solution to each test tube. Place the 3 tubes at the same time in a boiling water for 5 minutes.

5. Remove all 3 tubes from the water bath at the same time and observe the amount of precipitate and the color of the Benedict's solution in the tube...


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