A classmate obtained a clear liquid, but unfortunately did not label it properly. To help identify it, you determine that its melting point (mp) is -22.9 degrees Celcius. If the only clear liqids available in the lab were acetonitrile (mp -45.5 degrees Celcius), benzene (mp 6.0 degrees Celcius), carbon tetrachloride (mp -23.0 degrees Celcius), and cyclohexane (mp 7.0 degrees Cecius), what is the identity of the liquid

what is the volume occupied by 40 grams of argon gas (ar) at standard conditions? what volume, in liters, is occupied by 1.5 x 1023 

they are all solids.

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.