What is the formula for a hydrate of copper (II) sulfate, CuSOs, that had a mass of 6.52 grams before heating and 4.17 grams after heating? CuSO4 H20

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 was bohr’s contribution to the planetary model

Answer explain why it is not possible to deduce a complete order of reactivity.