What is the percent yield of CO2 if 46.5 grams of CO2 is recovered from the reaction of 21.5 grams of C2H2 according to the reaction below?
2 C2H2 + 5 O2 —>4 CO2 + 2 H2O

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.