Posted by **mary1111** on Friday, February 26, 2010 at 11:16am.

Why does luis place 3 cups of water without any solute in the freezer?

a. if some water spills, he will have extra

b. the plain water is the control group

c. he wants to know how long water takes to freeze

d. the 3 cups of water are unnecessary to the experiment

(b)

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