Consider a house into which radon is emitted through cracks in the basement. the total volume of the house is 650 m3 (assume that the volume is well mixed throughout). the radon source emits 250 pci/s (a picocurie [pci] is a unit proportional to the amount of radon gas and indicates the amount of radioactivity of the gas). air inflow and outflow can be modeled as a flow of clean air into the house of 722 m3 /h and an equal air flow out. radon can be considered to be conservative in this problem. (a) what is the retention time of the house

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation:

it would be a gas formation

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.