Which one of the following statements is NOT correct?
In a sample of air at a given temperature .

a. some nitrogen molecules are moving slower than some oxygen molecules.
b. all the molecules are moving.
c. the nitrogen and oxygen molecules have the same average kinetic energy.
d. the nitrogen and oxygen molecules have the same average speed.
e. some nitrogen molecules are moving faster than some oxygen molecules.

Which of the following characteristics are true of enzymes? check all that apply. a.)the structure of an enzyme can change if conditions change. b.)a single enzyme can normally catalyze a wide variety of reactions under many conditions. c.)enzymes are found only in nonliving systems. d.)enzymes allow living things to regulate body conditions through feedback mechanisms. e.)enzymes bind to specific substrates in specific ways. f.)enzymes increase the rate of reaction. g.)when shown in energy-reaction diagrams, enzymes represent the higher activation energy.

How can nonpolar molecule contain polar covalent bonds

Complete the paragraph to describe the characteristics of a borane molecule (bh3). the lewis structure and table of electronegativities are given. the bond polarities in bh3 are , the molecular shape is , and the molecule is .