Using the solutions we made, place the 0.75 mol/L sodium hydroxide in a burette and 10.00 mL of sulfuric acid of an unknown concentration (you are pretending that you do not know the concentration), as well as 3 drops phenolphthalein as an acid-base indicator. Determine the concentration of the acid

space exploration has led to the development and technological improvement of many everyday items. (if this answer is wrong i will find the right answer) : )

a corroding iron, if that's one of your choices

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.