1pt Inside the lungs, gases move into and out of the blood through the: O A. epiglottis.
O B. alveoli.
O C. larynx.
O D. trachea.

An aqueous solution of hydroiodic acid is standardized by titration with a 0.186 m solution of calcium hydroxide. if 26.5 ml of base are required to neutralize 20.3 ml of the acid, what is the molarity of the hydroiodic acid solution? m hydroiodic acid

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

What is the percent by mass of magnesium sulfate in mgso4.7h2o