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How should the student design investigation 2 to finish testing the factors that affect the dissolving rate of KCl?



A

Keep the temperature at 40°C. Do not stir the solution.


B

Keep the temperature at 20°C. Stir the solution.


C

Decrease the temperature to 0°C. Do not stir the solution.


D

Increase the temperature to 80°C. Stir the solution.

1 Answer

3 votes

Answer:

B

Keep the temperature at 20°C. Stir the solution

Step-by-step explanation:

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