3.
there are three possible resonance structures for carbonic acid, h2co3. draw the three resonance
structures, calculate the formal charges for each atom in each structure and select the resonance
structure(s) that is (are) predicted to be the major contributor(s) to the resonance hybrid.

nanotechnology is a powerful tool in biomaterials research as it creates numerous possibilities for the engineering of functional molecules. nano-bio refers to projected ability to incorporate biomimicry into various materials at nanoscale.  

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.

it is stable as it is in group 0 which have full outer shells of electrons