Consider that each of the following species is in its lowest energy state. Which set contains species that all have the same electronic configuration? Question 1 options:

Na+, K+, Rb+, Cs+

Mg2+, Ca2+, Sr2+, Ba2+

N, O, F, Ne

F−, Cl−, Br−, I−

N3−, O2−, Mg2+, Al3+

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

Which statement best describes the function of enzymes?

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?