Which is the best definition of air pressure? A. the amount of water vapor in the air.

B. the weight of the air pressing on everything in the environment

C. the amount of precipitation in a certain area

D. the type of clouds in the atmosphere

This is a mixture that has the same composition throughout.

An aqueous solution of potassium hydroxide is standardized by titration with a 0.194 m solution of hydrobromic acid. if 25.2 ml of base are required to neutralize 24.2 ml of the acid, what is the molarity of the potassium hydroxide solution? m potassium hydroxide

How many distinct monochlorinated products, including stereoisomers, can result when the alkane below is heated in the presence of cl2? 3 4 5 6 7?