You perform the following reaction in the lab: 2 Li2S(s) + Sn(NO3)4(aq) → SnSz(s) + 4 LiNO3(aq)
You dissolve 17.700 g of solid Li2S in 268.38 mL of 0.6994 M Sn(NO3)4. Which reactant
is the limiting reactant?

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.  

since electrons are negative the answer is neagtaive

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.