60 POINTS PLEASE HELP. Air is made up mostly of O 2 , N 2 , and CO 2 . If the total pressure of air is 765mmHg and P (N2) = 0.79 atm and P (CO2) = 0.05 atm, then what is the partial pressure of the O 2 ?

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

If the concentration of phosphate in the cytosol is 2.0 mm and the concentration of phosphate in the surrounding fluid is 0.1 mm, how could the cell increase the concentration of phosphate in the cytosol? a) passive transportb) diffusionc) active transportd) osmosise) facilitated diffusion