Solid calcium carbonate reacts with dilute solution of hydrochloric acid to give a solution of calcium chloride and carbon dioxide gas. Water is also formed

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

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 many atoms are there in 5.70 mol of mg