29 6. A student carefully placed 15.6 g of sodium in a reactor supplied
with an excess quantity of chloride gas. When the reaction was
complete, the student obtained 39.7 g of sodium chloride. How
many grams of chloride gas reacted?
Ms. Nadia Baz

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.

Compare and contrast physical changes with chemical changes.

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?