Using the "Density Triangle" solve the following problems (Show Your Work): 18. A 20g object is 15ml. What's its density?
M
19. A 25ml object has a density of 4.25g/ml. What's its mass?
20.A 100g sample has a density of 14.25g/mL. What's it's volume?
DV

you need to stop taking that class

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.