What mass of solute is needed to prepare each of the following solutions A, 1.00L of 0.125M K2So4
B,375mL of 0.015M NaF
C, 500mL of 0.350M C6H12O6

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.

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.