Baking soda, NaHCO3, decomposes when it is heated. How much heat will be absorbed by the decomposition of 441 grams of baking soda?
2 NaHCO3 → Na2CO3 + H2O + CO2 DH = +129 kJ

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.

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

What is i fracture in the crust called when land move up, down or sideways