What is the density of water (in g/mL) to four significant figures at 20°C?

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.

Draw metallic bonding if two copper

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?