Into how many peaks would you expect the 1H NMR signals of the indicated protons to be split? (Assume all coupling constants are equal.) ball & stick -+labelsHighlight H20Highlight H18Highlight H19Highlight H15 H20: ___ H18: ___ H19: ___ H15: ___

Why should the scientific method be used to answer a question? a. it provides a way to test an idea without any bias. b. it provides a way to test a hypothesis. c. it provides a way to ensure all hypotheses are proven correct. d. it provides a way to quickly turn a hypothesis into a scientific theory.

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.

Find the mass, in grams, of 5.00*10^23 molecules of f2