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which of the following is/are characteristic(s) of a good hypothesis?
a. it is falsifiable
b. it is testable
c. it is based on previous research
d. all of the above

The arrangement of particles is most ordered in a sample of

What is the equation fort the alkaline zinc/manganese dioxide cell. a) anode b)cathode c)overall equations.

Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?