A hypothetical metal M forms the following complexes with the generalized ligands X, Y, and Z: Complex ionObserved color
[M(X)6]3+green
[M(Y)6]3+blue
[M(Z)6]3+yellow
Order these ligands according to their ability to split d orbitals. In other words, set up a spectrochemical series, from strongest to weakest ligand field strength.
Spectrochemical series:
I− a. X Weakest Middle Strongest
b. Y Weakest Middle Strongest
c. Z Weakest Middle Strongest

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.

Can someone me with questions 15 to 17 plz.

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8