A. Why do you think the catalysts allowed the chemical reaction to take place at 0 °C? B. Why do you think the shape of a catalyst is important?

i'm wiling to try and you : )

a corroding iron, if that's one of your choices

i believe the answer is 5,000

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.