1) what is the balanced equation for the reduction of gold ions in water to solid gold. 2) calculate the pH of lemon juice to three significant, with a hydrogen ion concentration of 3.65x 10^ -3 mole dm -3. Show all steps of your calculations and include all correct units.

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.

Elements in group 2 are all called alkaline earth metals. what is most similar about the alkaline earth metals?

Which one of the following bonds would you expect to be the most polar? a) b–h b) n–h c) p–h d) al–h e) c–h