Edta is a hexaprotic system with the pka values: pka1=0.00 , pka2=1.50 , pka3=2.00 , pka4=2.69 , pka5=6.13 , and pka6=10.37 . the distribution of the various protonated forms of edta will therefore vary with ph. for equilibrium calculations involving metal complexes with edta , it is convenient to calculate the fraction of edta that is in the completely unprotonated form, y4− . this fraction is designated − . calculate − at two ph values.

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question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

the answer is c. nacl