What is the ratio of the molarities of po3− 4 and hpo2− 4 ions in a buffer solution having a ph of 10.92?

When we have Pka = 12.68 (missing in your question)

so by using H- H equation we can get the molarity ratio:

PH   = Pka + ㏒ [conjugate base/ weak acid]

when we have PH= 10.92 

and Pka = 12.68 

so by substitution:

 10.92 = 12.68 + ㏒ [PO3-4]/[HPO2-4 ]

∴ [PO3-4]/[HPO2 -4] = 0.017

Butterfly wingspan is 7.7

Atp, shorthand for adenosine triphosphate, is the standard molecule for cellular enger in the human body. all motion and metabolic  processes  within the body begins with energy that is released from  atp, as its phosphate bonds are broken in cells through a  process  called hydrolysis.