If you have access to stock solutions of 1.00m h3po4,1.00 m of hcl, and1.00 m naoh solution,(and distilled water of course),what volumesof each would you mix before diluting to a final volume of 2.00 l to prepare 2.00 l of ph 7.40 buffer with a final total concentration of 50 mm of phosphorous contains species (e. g. so that [h3po4] [h2po4-] [hpo42-] [po43-]

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

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