A 100.0 mL sample of 0.180 mol L-1 HClO4 is titrated with 0.270 mol L^-1 NaOH. Determine the pH of the solution after the addition of 75.0 mL of NaOH.

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.

gasoline is a mixture. it contains several different kinds of compounds that can be present in a variety of ratios.