Which of the following does NOT affect the efficiency of a sanitizer? A
The amount of time the solution has contact with the object being
sanitized
Temperature of the solution
B
The type of material being sanitized
D
Concentration of the solution

How many atoms of oxygen are contained in 160 grams of n2o3

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.

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.