Low-density polyethylene, used to make plastic films, is made by the radical polymerization of ethene, and is one of the hardest plastics to recycle. It gets its name A)

from the process by which it's polymerized.

B)

because it's strong but flexible.

C)

because of the way the chains pack like spaghetti, close and tight.

D)

from the spaces left between chains when the polymer is formed.

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.

yes the answer is total mass in unchanged   : )