The useful buffer range is defined by the equation ph = pka ± 1 calculate the range of the ratio of [conjugate base]/[acid] that corresponds to this equation. 0 ≤ [conjugate base]/[acid] ≤ 1 10 ≤ [conjugate base]/[acid] ≤ 1.0 0.1 ≤ [conjugate base]/[acid] ≤ 10 10 ≤ [conjugate base]/[acid] ≤ 100 1.0 ≤ [conjugate base]/[acid] ≤ 10

For the following dehydrohalogenation (e2) reaction, draw the zaitsev product(s) resulting from elimination involving c3–c4 (i.e., the carbon atoms depicted with stereobonds). show the product stereochemistry clearly. if there is more than one organic product, both products may be drawn in the same box. ignore elimination involving c3 or c4 and any carbon atom other than c4 or c3.

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 mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?