How many grams of solid k2co3 are needed to prepare 150. ml of a 0.50% by volume k2co3 solution ?

Ionic compounds are made of ions, and yet the overall charge of an ionic compound is neutral. why?

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.

How can one make a supersaturated solution? (apex)