What volume of hydrogen will be produced at STP by the reaction of
78.33g of aluminum with water?

Easy definition for atom and atomic mass

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.

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.