The mole fraction of trichloromethane (CHC13) in a mixture of tetrachloromethane (CC14) is 0.453. The vapour pressure of pure CHCl3 and pure CCl4 are 193mmHg and 108mmHg respectively at 24°C. (2 Marks) (i) What is the total vapour pressure of the mixture at 24°C? (ii) What is the mole fraction composition of the vapour obtained from boiling of this mixture​

"the periodic table is arranged in order of atomic number."

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.

hypostyle hall;