write the net ionic equations and determine the standard potentials for the reaction of copper or zinc with tin(iv)

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.

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

Type the letter that represents the correct location for each particle type below.