Which statement is NOT true for an electrochemical cell? An oxidation-reduction reaction must occur

The metals that form the electrodes must be identical

Nonparticipating ions must flow to keep the electrons electrically neutral

Electrons must flow through a separate path from the reaction solutions

Classify each statement about effective nuclear charge, zeff, as true or false.

If 3.00 g of titanium metal is reacted with 6.00 g of chlorine gas, cl2, to form 7.7 g of titanium (iv) chloride in a combination reaction, what is the percent yield of the product?

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.