Air has a mass of 1.2g and a volume of 4,555ml. What is the density

Motivation cannot be developed with practice; a person either possesses it or they do not.

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.