Each box contains 10 items. B.
Box 1
Net mass A = 10 grams
Box 2
Net mass B = 5 grams
Box 3
Each made of 1 A and 1 B
Mass box A = 10 grams; Mass box B = 5 grams; Mass box C-made of one A and one B
Mass ratio A/B =

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Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

What is avogadro’s number, and why is it useful

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?