What happens in the lungs? Select all that apply. A. Blood releases oxygen into the air.
B. Blood mixes with the air.
C. Blood releases carbon dioxide into the air.
D. Blood absorbs oxygen from the air.
E. Blood absorbs carbon dioxide.

100mg magnesium reacts with 20ml of 1.0m hcl

What are the three major branches of natural science? • earth and space science, life science, physical science •earth and space science, physical science, chemistry •physical science, life science, chemistry •life science, chemistry, physics

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.